Answer: Dry and Arid climates
Explanation: gfc
Based on the given information, this type of soil is called a Calcrete-rich soil. The absence of an O-horizon indicates that the soil lacks organic matter, while the presence of an abundant B-horizon with Calcrete suggests that the soil has undergone a process of mineral accumulation. Calcrete is a mineral deposit that forms in soils with high levels of calcium carbonate and alkaline conditions. Therefore, the soil shown is rich in Calcrete, which is a defining characteristic of Calcrete-rich soils.
The type of soil that is characterized by the absence of an O-horizon and a B-horizon with abundant calcrete is known as a calcic soil. Calcic soils are formed in arid and semiarid regions, where high evapotranspiration rates and low precipitation result in low leaching and high mineral accumulation. The accumulation of calcium carbonate (calcrete) in the B-horizon is a common feature of calcic soils, and can make the soil hard and difficult to cultivate. Despite their limitations for agriculture, calcic soils are important ecosystems that support unique plant and animal communities adapted to the harsh environmental conditions. Calcic soils are a subtype of aridisol, which is one of the twelve soil orders recognized by the United States Department of Agriculture. Aridisols are soils that are characterized by low organic matter content, high mineral accumulation, and limited biological activity. They are typically found in regions with a desert or semidesert climate, where precipitation is scarce and evapotranspiration rates are high.
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what indicates that the south side of the mountain was not significantly impacted by the may 1980 eruption?
Hi! The south side of the mountain was not significantly impacted by the May 1980 eruption, as there is minimal evidence of pyroclastic flows, ash deposits, or lava flows in that area. This suggests that the eruption's primary force was directed towards the north and northeast, sparing the southern slopes from severe damage.
The Earth’s mantle within the crust is classified into different sections depending on individual seismology. These include the upper mantle, which ranges between 8 – 35 km to 410 km; the transition zone ranges from 400 to 660 km; the lower mantle lies between 660 – 2891 km.The conditions change dramatically from the crust to the mantle location. The pressures rise drastically and temperatures rise up to 1000 oC. This viscous and molten rock gets collected into large chambers within the Earth’s crust.Since magma is lighter than surrounding rock, it floats up towards the surface and seeks out cracks and weakness in the mantle. It finally explodes from the peak point of a volcano after reaching the surface. When it is under the surface, the melted rock is known as magma and erupts as ash when comes up.
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which are characteristic of flash floods, but not of regional floods? choose all that apply. which are characteristic of flash floods, but not of regional floods? choose all that apply. low flow velocities can accurately be forecast being influenced by topography high flow velocities being influenced by surface conditions submit
In the northern hemisphere tropical regions, light is never limiting. However, there is a strong thermocline in this area, which limits upwelling. Therefore, nutrient supply is low year round. In these areas, primary production is nutrient limited.
The thermocline is more clear in tropical low-latitude areas because the sea shell is much warmer. Also, there is a little seasonal riff in the profiles due to the lack of seasonal riff in surface temperature in tropical regions.
Keep in mind that light and the availability of nutrients limit ocean productivity; Additionally, primary productivity is constrained by the thermocline, which separates the photic zone from the nutrient-rich waters.
The amount of nutrients brought to shallower depths by upwelling processes is limited by a deeper thermocline, which frequently occurs during El Nio years and has a significant impact on the year's fish crop.
Typically, the water that rises to the surface as a result of upwelling is colder and full of nutrients. Surface waters are said to be "fertilized" by these nutrients, indicating that they frequently have high levels of biological productivity. As a result, areas with a lot of upwelling typically have good fishing grounds.
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Answer: In the northern hemisphere tropical regions, primary production is nutrient-limited despite light not being a limiting factor. This is because the thermocline in this area limits upwelling, which results in a low supply of nutrients throughout the year.
Explanation: Nutrients are crucial for primary production because they are necessary for the growth of plants and phytoplankton, which form the base of the food chain. The thermocline is a layer of water in the ocean that separates the warmer surface water from the colder, deeper water. In tropical regions, the thermocline is particularly strong due to the high temperatures and abundant sunlight. This makes it difficult for nutrients to reach the surface waters, where photosynthetic organisms can use them to grow and reproduce.
As a result, primary production is low in these areas. This has implications for the entire ecosystem, as the food chain relies on the production of organic matter by primary producers. Without enough primary production, the entire food chain can suffer, leading to a decline in the abundance and diversity of marine life. Overall, the nutrient limitation in tropical regions of the northern hemisphere highlights the importance of understanding the complex interactions between physical and biological processes in the ocean. This knowledge is crucial for predicting how marine ecosystems will respond to environmental changes, such as global warming or ocean acidification.
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One would normally begin with ________ in a GIS project:
a.data display
b.data acquisition
c.data analysis
d.data exploration
One would normally begin with (a) data acquisition in a GIS project. This involves identifying and obtaining the necessary data sources for the project, such as satellite imagery, survey data, or existing maps.
Once the data has been acquired, it can then be explored, analyzed, and displayed within the GIS software. Before acquiring data, it is important to determine the scope and goals of the project in order to identify what data will be needed. Once the necessary data has been identified, it can be obtained from a variety of sources, such as government agencies, commercial providers, or open data portals. Once the data has been acquired, the next step is data preparation, which involves cleaning, formatting, and organizing the data to make it usable for analysis within the GIS software. This can include tasks such as removing duplicates, correcting errors, and creating a common coordinate system. After the data has been prepared, it can be imported into the GIS software and used to create maps, perform spatial analysis, and generate new data through processes such as interpolation or buffering. Overall, data acquisition is a crucial first step in any GIS project, as it lays the foundation for all subsequent analysis and decision-making.
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One would normally begin with Data acquisition in a GIS project. In a GIS (Geographic Information System) project, the typical starting point is data acquisition. Data acquisition involves gathering or obtaining relevant data that will be used in the GIS project.
This may include obtaining geospatial data from various sources, such as satellite imagery, aerial photography, digital maps, or field surveys.
Data acquisition is a critical step in GIS project as the accuracy, quality, and completeness of the data collected will directly impact the results and outcomes of the project.
Once the data is acquired, it can then be processed, analyzed, displayed, and explored using various GIS tools and techniques to derive insights, make decisions, and solve spatial problems.
Data acquisition sets the foundation for the entire GIS project and serves as the starting point for subsequent data processing and analysis tasks.
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how much of earth’s land surface is still covered with wilderness?
According to the World Wildlife Fund, only 22.9% of Earth's land surface is still covered with wilderness.
This has been decreasing due to human activities such as urbanization, industrialization, and agriculture. This means that more than three-quarters of the Earth's land surface has been modified by humans. While this loss of wilderness is concerning, conservation efforts are helping to protect remaining wild areas and ensuring that future generations can continue to enjoy them.
Organizations like the WWF are working to expand wilderness areas and to protect the biodiversity found in them. They are also advocating for better land management policies to keep wildlife habitats safe and healthy.
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water underground that group of answer choices seeps up from the water table because of the electrostatic attraction of water molecules to mineral surfaces is called phreatic-zone water. adheres temporarily to sediment particles and eventually evaporates back into the atmosphere or is absorbed by plant roots is called groundwater. partially fills pores in the unsaturated zone is called capillary fringe. completely fills pores in the saturated zone is called groundwater.
The water that is found underground is generally referred to as groundwater. This water can partially fill pores in the unsaturated zone, which is called the capillary fringe, or it can completely fill pores in the saturated zone, which is also referred to as groundwater.
Additionally, some groundwater may adhere temporarily to sediment particles and eventually evaporate back into the atmosphere or be absorbed by plant roots. However, if the water is seeping up from the water table because of the electrostatic attraction of water molecules to mineral surfaces, it is called phreatic-zone water.
Groundwater is the water that completely fills pores in the saturated zone, while water that partially fills pores in the unsaturated zone is called capillary fringe. Phreatic-zone water seeps up from the water table due to electrostatic attraction of water molecules to mineral surfaces. Lastly, water that adheres temporarily to sediment particles and eventually evaporates back into the atmosphere or is absorbed by plant roots is known as soil moisture.
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The European Age of Discovery is most strongly tied to this country A) Britain B) France C) Germany D) Italy E) Portugal
The European Age of Discovery is most strongly tied to Portugal.
E is the correct answer.
Beginning in the 15th century, European seamen primarily explored the world during the Age of Discovery. Discoveries of new continents and the creation of new trade routes transformed the course of entire nations, and the wealth of the New World was used to establish new empires.
Late in the fourteenth century, it first appeared. European Nations searched for several trade routes to Asia. The marine route around Africa had been taken up by Portugal, and the land path was dangerous.
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Answer: The European Age of Discovery is most strongly tied to the country E) Portugal.
Explanation: During the European Age of Discovery, various countries embarked on voyages to explore and establish trade routes, as well as to claim new territories. Portugal played a significant role in this period due to its pioneering efforts in exploration and navigation. Portugal's strategic location on the Atlantic coast of Europe provided an advantageous position for launching expeditions.
Under the leadership of Prince Henry the Navigator, Portugal initiated a series of voyages in the early 15th century. These expeditions led to the discovery of the Azores, Madeira, and Cape Verde Islands, as well as the exploration of the African coastline. In 1498, the Portuguese explorer Vasco da Gama successfully sailed around the Cape of Good Hope and reached India, establishing a sea route to Asia. This achievement allowed Portugal to gain control over the highly lucrative spice trade, which was previously dominated by land routes through the Middle East.
Additionally, the Portuguese explorer Pedro Álvares Cabral discovered Brazil in 1500, which led to the establishment of a vast colonial empire in South America. The success of Portuguese explorations inspired other European countries, such as Spain, Britain, and France, to embark on their own voyages of discovery. In conclusion, Portugal played a crucial role in the European Age of Discovery due to its pioneering efforts in exploration, the establishment of new trade routes, and the discovery of new territories. This ultimately influenced other European countries to engage in exploration and expand their global influence. The answer to the question is E) Portugal.
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Anoki's grandparents live on the land that his Native American tribe has traditionally inhabited, and they practice traditional religious customs there.
When Anoki's grandparents come to visit them in the city, they do not observe any of the rituals. Why might this be?
OA. The city is too dirty for religious observances of any type.
OB.
OC.
D.
They follow an animist faith that is centered in the land of the tribe.
They are embarrassed to follow such old-fashioned practices.
They don't want to diffuse their religion.
Answer:
Explanation:The Native American Church (NAC), also known as Peyotism and Peyote Religion, is a Native American religion that teaches a combination of traditional Native American beliefs and Christianity, with sacramental use of the entheogen peyote.
a single igneous pluton has risen through the country rock and has created a rim of metamorphic rock surrounding the pluton. what term best describes this type of metamorphism?
The term that best describes this type of metamorphism is "contact metamorphism.
The term that best describes this type of metamorphism is "contact metamorphism." It occurs when an igneous pluton rises through the country rock, causing the surrounding rocks to undergo metamorphism due to the heat and chemical changes associated with the intrusion. The resulting rim of metamorphic rock surrounding the pluton is an example of this process.The metamorphic rock that forms around the pluton is known as the "contact aureole."
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All of the following are necessary ingredients for the formation of clouds, EXCEPT:A) warm surface air temperatures.
B) saturated air.
C) adequate water vapor content.
D) condensation nuclei.
The option that is not a necessary ingredient for cloud formation is (A) warm surface air temperatures.
The necessary ingredients for the formation of clouds are saturated air, adequate water vapor content, and condensation nuclei. Clouds form when warm, moist air rises and cools, causing water vapor to condense into tiny water droplets or ice crystals. The cooling can occur for a variety of reasons, such as the air rising over a mountain range or being lifted by a weather front. For clouds to form, the air must be saturated, meaning it contains as much water vapor as it can hold at a given temperature and pressure. This can occur naturally when warm air picks up moisture from the surface of the Earth or bodies of water, or through human activities like industrial processes or agriculture.
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All of the following are necessary ingredients for the formation of clouds, EXCEPT warm surface air temperatures. The correct option is A.
Clouds form through a process involving three key components: adequate water vapor content, condensation nuclei, and a cooling mechanism that allows the air to reach saturation.
Adequate water vapor content is crucial for cloud formation because it provides the necessary moisture in the atmosphere. Without sufficient water vapor, condensation cannot occur, and clouds will not form.
Condensation nuclei are tiny particles, such as dust, smoke, or salt, that provide a surface for water vapor to condense upon. These particles act as the foundation for the formation of cloud droplets. In the absence of condensation nuclei, water vapor would have a difficult time transitioning into visible cloud droplets.
Although warm surface air temperatures can promote the evaporation of water and increase the amount of water vapor in the atmosphere, they are not a necessary ingredient for cloud formation. It is the cooling of air, often due to rising or expansion, that allows the air to reach saturation and ultimately leads to condensation and cloud formation. This cooling mechanism is the critical factor that enables clouds to form, regardless of the surface air temperature.
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what were the impact of cyclone ida on the environment?
Answer:
The Cyclones Idai and Kenneth displaced tens of thousands of families, leaving many in need of basic supplies like food and water. The two storms brought widespread flooding and the destruction of almost 780,000 hectares of agriculture crops.
A location where transfer is possible from one mode of transportation to another. (seaports and airports) (A steel mill near the port of Baltimore receives iron ore by ship from South America and coal by trail from Appalachia)
The term that describes a location where transfer is possible from one mode of transportation to another is "intermodal transportation hub" or simply "intermodal ".
An intermodal hub is a facility or location that allows for the transfer of cargo or passengers between different modes of transportation, such as from ship to truck, from train to airplane, or from truck to train. Intermodal hubs can be located at seaports, airports, or along major highways or rail lines.In the example given, the steel mill near the port of Baltimore is an example of an intermodal hub, as it receives raw materials by both ship and train, and likely uses trucks or other means of transportation to move finished products to market. By using multiple modes of transportation, the steel mill can take advantage of the strengths of each mode and optimize its supply chain for efficiency and cost-effectiveness.
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another term for explosive cyclogenesis used by meteorologists is ______.
Another term for explosive cyclogenesis used by meteorologists is "bombogenesis" or simply "bombing". This term refers to a rapidly intensifying area of low pressure in which the central pressure drops at least 24 millibars in 24 hours or less.
Explosive cyclogenesis, or bombogenesis, is a meteorological phenomenon that occurs when a mid-latitude cyclone or a frontal wave undergoes rapid intensification, with its central pressure falling at a rate of at least 1 millibar per hour for 24 hours or more. This process can occur over both oceanic and continental areas, but it is most common over the western North Atlantic Ocean, where it is often associated with nor'easters. Explosive cyclogenesis can have significant impacts on weather and climate patterns, as it can generate strong winds, heavy precipitation, and storm surges. In some cases, it can even lead to blizzard conditions or hurricane-force winds. The term "bombogenesis" was first coined by meteorologists in the 1940s to describe the rapid intensification of a mid-latitude cyclone, and it has since become a common term used in weather forecasts and discussions. In recent years, there has been some debate among meteorologists about whether the term "bombogenesis" is too sensationalistic and whether it should be replaced with a more technical or descriptive term. However, the term remains in use and is still widely recognized by the public and the media.
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Another term for explosive cyclogenesis used by meteorologists is "bombogenesis".
This phenomenon occurs when a mid-latitude cyclone rapidly intensifies, with a pressure drop of at least 24 millibars in 24 hours.
The term "bomb" refers to the explosive nature of the process, where the cyclone's central pressure drops so rapidly that it resembles a bomb detonating. Explosive cyclogenesis can lead to severe weather events, such as blizzards, heavy rainfall, and strong winds, and can have significant impacts on transportation and infrastructure. Meteorologists closely monitor these events and issue warnings and advisories to help communities prepare and respond. The conditions that lead to explosive cyclogenesis typically occur during the winter months, over the Atlantic Ocean and in the western Pacific.
However, it can also occur over land and during other seasons. Understanding the science behind this phenomenon is crucial for meteorologists in accurately predicting and communicating severe weather events to the public, so that people can take necessary precautions to stay safe.
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What was the early atmosphere of the earth like? What was the Oparin-Haldane hypothesis?
The early atmosphere of the earth is believed to have been composed primarily of carbon dioxide, nitrogen, and water vapor.
It is thought that the planet's atmosphere began to evolve around 4 billion years ago, as volcanic activity released gases that eventually formed the early atmosphere. The Oparin-Haldane hypothesis is a scientific theory that was first proposed in the 1920s by Russian biochemist Alexander Oparin and later developed by British scientist J.B.S. Haldane. This hypothesis proposes that the early earth's atmosphere, which was primarily composed of gases such as methane, ammonia, and hydrogen, along with lightning strikes and UV radiation from the sun, gave rise to organic molecules necessary for life. These organic molecules eventually led to the formation of the first cells, which became the building blocks of all living organisms.
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what provision of the resource conservation and recovery act (rcra) is aimed at eliminating midnight dumping and ensuring proper disposal of hazardous wastes?
The provision of the Resource Conservation and Recovery Act (RCRA) that is aimed at eliminating midnight dumping and ensuring proper disposal of hazardous wastes is the "cradle-to-grave" system.
This system requires hazardous waste generators to properly label, package, and store their waste, as well as to use licensed and authorized transporters and treatment facilities for the disposal of the waste. The system also mandates that waste handlers keep detailed records of the waste from its creation to its final disposal, thereby ensuring accountability and proper handling throughout the entire waste management process. This provision is critical in preventing the illegal and hazardous practice of midnight dumping, which can harm human health and the environment.
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what cultural and idustrial elements promote sustainable development in bhutan, maldives nepal, and sri lanka
The activities are crucial since they create jobs, supply food, and exports while not requiring highly sophisticated technology in the countries with limited resources and sustainable development economy.
What factors affect the current governments of Sri Lanka, the Maldives, Bhutan, and Nepal?Political structures have been impacted by religion. Monks first took charge of Bhutan. Nepal has monarchs who preferred Buddhism. The activities are crucial since they create jobs, supply food, and exports while not requiring highly sophisticated technology in the countries with limited resources and a poorly developed economy.
What distinguishes Bhutan and Nepal from Sri Lanka and the Maldives?However, they should incorporate any pertinent information from the chapter, such as: Different: North of India, in the Himalaya, the highest mountains in the world, are Bhutan and Nepal.
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if there are 100 magnitude-5 earthquakes in a given region (not globally) in a year, then the number of magnitude-6 earthquakes is
It is difficult to accurately predict the exact number of magnitude-6 earthquakes that may occur in a given region based solely on the occurrence of 100 magnitude-5 earthquakes.
However, generally speaking, the number of magnitude-6 earthquakes may be significantly lower than the number of magnitude-5 earthquakes. This is because earthquakes increase in magnitude exponentially, meaning that there are fewer larger earthquakes than smaller ones. Additionally, the occurrence of earthquakes is influenced by many factors.
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much of the portable art from the ice age is of animals, but the most famous pieces are the so-called _____________, such as the example from willendorf, austria
Much of the portable art from the ice age is of animals, but the most famous pieces are the so-called Venus figurines, such as the example from Willendorf, Austria.
The name is Venus Figurine refers to the more than 200 tiny statuettes of voluptuous female figures discovered at Upper Palaeolithic sites throughout Europe and certain areas of Asia.
"When paleoanthropologists refer to figurines as Venuses, [they] usually do so with air quotes" (von Petzinger, 95), because stories about the goddess Venus predate Venus sculptures by thousands of years. The term comes from speculations that link these figures to fertility and sexuality, two characteristics connected with the Roman goddess.
While the bulk of Venus figurines exhibit these voluptuous qualities, individual specimens show considerable variation in terms of materials and craftsmanship. In terms of geography, they are also fairly different.
They have been discovered in locations throughout Europe and as far away as Siberia. The majority have been discovered in prehistoric village sites, both inside caves and in open areas. While exceedingly unusual, several figurines have been discovered in graveyards.
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if a nation has large areas of arable land and access to water that nation will likely have
which of the following is NOT a factor that influences population distribution?
a - language
b - government policy
c - economy
d - resources
________ is a good indicator whether or not a country is developed or developing
a - religion
b - currency
c - literacy rate
d - language
Answer:
1. economy
2. literacy rate
Explanation:
The assistant principal drew a diagram of the courtyard on a coordinate grid. He drew the bike rack at (-6, 1), the bench at (5, 1), and a table at (2, 5).
The length of each square on the grid represented one yard.
What was the distance between the bike rack and the bench?
A.
6 yards
B.
11 yards
C.
8 yards
D.
10 yards
Answer:
Explanation:32
Answer:
11
Explanation:
.
Nearly all of the losses due to Washington historical earthquakes were due to:(a) crustal earthquakes.(b) subduction-zone earthquakes.(c) earthquakes within the Juan de Fuca Plate.
Nearly all of the losses due to Washington historical earthquakes were due to earthquakes within the Juan de Fuca Plate.
C is the correct answer.
Deep earthquakes that rupture faults within the subducting Juan de Fuca plate are the most frequent cause of destructive earthquakes in Washington and Oregon. These earthquakes are referred to as "intraplate" earthquakes. These can be found between 30 and 70 kilometres deep beneath Puget Sound.
A little tectonic plate known as the Juan de Fuca Plate was created by the Juan de Fuca Ridge, which is currently subducting beneath the northernmost region of the North American Plate's western side near the Cascadia subduction zone.
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Answer: Nearly all of the losses due to Washington historical earthquakes were due to crustal earthquakes. The answer is: (a) crustal earthquakes.
Explanation: Crustal earthquakes occur within the Earth's crust, usually along fault lines, and they are relatively shallow, with a depth of less than 20 km. In Washington, these earthquakes happen along faults within the North American Plate. Washington is located in a seismically active region due to the convergence of the Juan de Fuca Plate and the North American Plate, which also leads to subduction-zone earthquakes and earthquakes within the Juan de Fuca Plate.
However, it is the crustal earthquakes that have historically caused the most damage and losses in the state. Some reasons for this include the proximity of the faults to populated areas, the shallow depth of the earthquakes, and the vulnerability of infrastructure.
Additionally, crustal earthquakes in Washington have had a higher frequency of occurrence compared to subduction-zone earthquakes and earthquakes within the Juan de Fuca Plate. Therefore, they have been responsible for most of the earthquake-related losses in the region. The answer is: (a) crustal earthquakes.
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rhyolite lava group of answer choices has more silica than basalt lava does. indicates the tendency for explosive activity. may freeze in the vent and emerge as a spine. may form a lava dome above the vent. all the possible answers are correct.
"Rhyolite Lava : all the possible answers are correct." All of the given options are right.
What is rhyolite lava?Rhyolitic lavas are sticky & tend to form big blocky lava flows or steep sided piles of lava known as lava do-mes. Rhyolite mag-mas tend to erupt explo-sively, commonly also producing abund-ant ash & pumice Due to their high con-tent of silica & low iron & magnesium contents, rhyolitic magmas form high-ly viscous lavas.
The options - "may freeze in the vent and emerge as a spine; has more silica than basalt lava does; indicates the tendency for explosive activity; may form a lava dome above the vent, are correct."
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geographic distribution explains the commuting patterns between cities and suburbs. group of answer choices true false
True. Geographic distribution can help explain the commuting patterns between cities and suburbs, as it refers to the spatial arrangement of people, places, and resources. Understanding this distribution can provide insights into the relationships between cities and suburbs, including commuting patterns.
A suburb, more broadly suburban area, is an area within a metropolitan area that is primarily a residential area, though may also include commercial and mixed-use areas. A suburb can exist either as part of a larger city/urban area or as a separate political entity. The name describes an area which is not as densely populated as an inner city, yet more densely populated than a rural area in the countryside. In many metropolitan areas, suburbs exist as separate residential communities within commuting distance of a city (cf "bedroom suburb".) Suburbs can have their own political or legal jurisdiction, especially in the United States, but this is not always the case, especially in the United Kingdom, where most suburbs are located within the administrative boundaries of cities. In most English-speaking countries, suburban areas are defined in contrast to central or inner city areas, but in Australian English and South African English, suburb has become largely synonymous with what is called a "neighborhood" in the US, and the term encompasses inner city areas.
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very fine mud sediments (<1/256) in size would most likely form what type of sedimentary rock? group of answer choices sandstone gypsum shale breccia
The correct answer is shale. Very fine mud sediments with a size less than 1/256 mm are classified as clay particles. When these clay particles are deposited and buried under pressure and compaction, they can form a sedimentary rock known as shale.
Shale is a fine-grained sedimentary rock composed mainly of clay minerals, such as illite, kaolinite, and smectite. The small particle size of the clay minerals allows for the formation of a dense, impermeable rock that can be found in a variety of depositional environments, including marine, lacustrine, and deltaic environments. The color of shale can vary from gray to black, and it often exhibits a fissile texture, meaning it can easily split into thin layers or sheets due to the alignment of clay minerals during compaction. Shale can also contain fossils, which can provide valuable information about the environment and conditions under which the rock was formed. In summary, very fine mud sediments with a size less than 1/256 mm are likely to form shale, a fine-grained sedimentary rock composed mainly of clay minerals that can be found in various depositional environments and can contain fossils.
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which rock has the finest crystals? group of answer choices phaneritic pegmatitic aphanitic porphyrtic
Pegmatitic rocks typically have the largest and often finest crystals of any rock type. Option B
What is a Pegmatitic rock about?Pegmatites are igneous rocks that form from the cooling of magma at relatively low pressures and temperatures, allowing for the growth of exceptionally large crystals.
These crystals can be several meters in length and can include minerals such as feldspar, quartz, and mica. So, the answer to your question is "pegmatitic."
The large crystals in pegmatites form due to the slow cooling of the magma or lava, which allows enough time for the minerals to grow to a large size. Pegmatites often contain a variety of minerals, such as feldspar, quartz, mica, and tourmaline, among others.
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which type of crustal material is more dense and therefore would subduct below the other? group of answer choices continental crust oceanic crust
Oceanic crust is more dense than continental crust and therefore would subduct below continental crust during the process of tectonic plate.
The type of crustal material that is more dense and would subduct below the other is oceanic crust. This is because oceanic crust is generally composed of denser rocks like basalt, whereas continental crust is composed of lighter rocks like granite.
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during crucial periods of human evolution, the pleistocene was characterized by group of answer choices aridity, then humidity. massive glaciation, then warm interglacials. high humidity. glaciation, then aridity.
The Pleistocene epoch, which lasted from about 2.6 million years ago to 11,700 years ago, was characterized by dramatic fluctuations in climate and environmental conditions.
One of the defining features of this period was the alternating cycles of glaciation and warming, known as glacial-interglacial cycles. During glacial periods, large portions of the earth's surface were covered by massive ice sheets, causing a drop in sea levels and a drying of many regions. Conversely, during interglacial periods, the earth's climate was relatively warmer and more humid, leading to the expansion of forests and grasslands. These climate fluctuations had a profound impact on human evolution, shaping the morphology, behavior, and distribution of early humans. During the glacial periods, early humans were forced to adapt to harsh and challenging conditions, such as limited food resources and extreme temperatures. In contrast, during the warmer interglacial periods, early humans were able to expand their ranges and take advantage of new resources, leading to the development of new cultural and technological innovations. Overall, the Pleistocene was characterized by a dynamic and ever-changing environment, with dramatic shifts in temperature, humidity, and glaciation playing a key role in the evolution of our species.
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Which of the following statements about pulsars is true?
a) If we observe a Type II supernova and do not see a pulsar afterward at the same location, we know a black hole must be present there.
b) Pulsars cannot be rotating white dwarfs because their rotation rate is so high that a white dwarf would be ripped apart.
c) Pulsars could very likely be signals from intelligent aliens.
d) All neutron stars are pulsars, if viewed from the right direction.
e) Once a pulsar forms, it typically lasts for billions of years.
Once a pulsar forms, it typically lasts for billions of years. Pulsars are rapidly rotating neutron stars that emit a beam of electromagnetic radiation.
The correct answer is E.
When this beam of radiation is aligned with Earth, it gives off pulses of radiation at regular intervals. Pulsars are typically formed when a massive star collapses in a supernova explosion and its core shrinks to a neutron star. In some cases, a black hole will be formed from the collapsed star instead of a neutron star.
Pulsars can be very long-lived, lasting for billions of years due to the conservation of angular momentum from the star's rapid rotation. Pulsars can spin hundreds of times per second and emit radiation across the electromagnetic spectrum. Pulsars are not believed to be signals from intelligent aliens, but rather just a natural phenomenon caused by the rotation of neutron stars.
The correct answer is E.
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(q020) features that are created when water dissolves surface and subsurface limestone, like sinkholes, troughs, caverns, natural bridges, and towers, are collectively called group of answer choices potentiometric surfaces. artesian surfaces. geothermal landscapes. karst landscapes.
Answer: Karst landscapes
Explanation: