Answer:
Convergent Evolution.
Explanation:
When two different species that are very distantly related but have similar traits its Convergent Evolution due to environmental pressures.
China is experiencing excessive air pollution due to the growing population’s increased use of fossil fuels. Which of the following changes is a consequence of air pollution?
A) Increased amount of sunlight.
B) Improved plant growth.
C) Widespread respiratory illness.
D) Decreased amount of acid rain.
Plants use the proton electrochemical gradient across the vacuole membrane to power the accumulation of salts and sugars in the organelle. This accumulation creates hypertonic conditions in the vacuole. Why does this not result in the plant cell swelling and bursting?
Answer:
Due to movement of water to the outside environment.
Explanation:
This hypertonic solution is not result in the plant cell swelling and bursting because hypertonic causes shrinkage of cell instead of swelling. Swelling of cell occurs when the cell experiences hypotonic solution due to presence of less amount of solutes inside the cell. In hypertonic solution, there is less amount of water in the solution as compared to the cell so the water in the cell moves towards outside of the cell causes shrinkage of the cell.
Of the following individuals, who most likely perform a site layout? A. Contractor B. Surveyor C. Architect D. Owner
Answer:
B
Explanation:
A surveyor surveys the land around them depending on the thing they need to survey for
A process that would result in the movement of these molecules out of the cell requires the use of ?
Explanation:
i think ATP energy molecules .
Where do we find most of our usable freshwater, and what can we do to keep it clean.
Answer:
we find most of our cleanest water in freshwater rivers and lakes and we keep it clean by using processing plants
Wolves are predators of deer. What is most likely to happen to the deer population if the wolf population increased?
stay the same
increase
decrease
become extinct
Answer:holy
Explanation:
Hoky
Formulating Generalizations
1. How is woody xylem in Tilia different from xylem in herbaceous monocots and dicots?
2. How do monocot and dicot stems differ in location of cambium, xylem, and phloem?
3. Explain how you would tell if one growing season was more favorable for growth than others.
4. How can you determine the past arrangement of leaves on a bare twig?
Answer:
A herbaceous dicot has vascular bundles arranged in a ring around the pit, we're at a herbaceous monocot has vascular bundles scattered throughout the stem. Or herbaceous dicot has vascular cambium between xylem and phloem, whereas a herbaceous monocot usually lacks vascular cambium.
Monocot stems have scattered vascular bundles. Dicot stems have their vascular bundles in a ring arrangement. Monocot stems have most of their vascular bundles near the outside edge of the stem. Dicot roots have their xylem in the center of the root and phloem outside the xylem.
The arrangement of xylem and phloem is different in dicots than it is in monocots. The xylem is all located in the middle of the dicot root, and bundles of phloem are arranged around it, separated from it by vascular cambium. Monocots do not have vascular cambium.
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What is a sound waves
what are sound waves* but anyways sound waves are sounds that travel through waves.
example: music travels out of a device into our ear.
Water heats up and cools down slower than land due to a higher _______ _______
What do populations living at high elevations have to adapt to?
A) lower ultraviolet light intensity.
B) higher average temperatures.
C) lower oxygen levels.
D) higher heart rates among children.
Answer:
c lower oxygen levels
Explanation:
the higher up the person is the closer to the atmosphere so there is less oxygen
The populations living at high elevations have to adapt to lower oxygen levels because at the sea level they at high altitude, there is less oxygen in the air that we breathe. This results that all of the blood from all areas of the lungs, is proportionally short on hypoxic.
What is hypoxia?
Hypoxia is refer to as the condition of the body in which the tissues are starved of oxygen. In its extreme form, where oxygen is entirely absent, the condition is known as anoxia.
The pressure on the body is about the same as ten meters of sea water pressing down on person body all the time. At sea level, air is compressible, then the weight of all that air at height compresses the air around us, making it denser. As the we go up a mountain, the air becomes less compressed and becomes thinner.
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lysogenic cycle reproduction steps
An enlarged right ventricle both increases oxygen intake and the risk of pulmonary hypertension. How can natural selection
result in an adaption that produces both positive and negative effects?
A) The positive effects appear after reproductive age in certain environments.
B) The positive effects outweigh the negative effects in certain environments.
C) The negative effects appear later in life in certain environments.
D) The negative effects appear before reproductive age in certain environments.
Answer: B
Explanation: I took the quiz on my own and got a 100%
The positive effects outweigh the negative effects in certain environments. Therefore, option (B) is correct.
What is natural selection?In certain environments, an enlarged right ventricle can be advantageous for increasing oxygen intake, such as at high altitudes where there is less oxygen in the air. However, in the same environment or in other environments, an enlarged right ventricle can increase the risk of pulmonary hypertension, which can lead to heart failure.
Natural selection can result in an adaptation that produces both positive and negative effects if the positive effects outweigh the negative effects in certain environments. This can result in the adaptation being favored by natural selection and becoming more common in the population. Over time, this can lead to the adaptation becoming a fixed trait in the population.
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19. Which of these is an example of behavioral isolation?
A. Two species of orchids have different flower structures.
B. Two species of meadowlark have different mating songs.
C. Two species of snakes live in the same area, but one species lives in the water and the other
lives on land.
D. Two species of birds share the same tree but live at different elevations.
The correct answer is B. Two species of meadowlark have different mating songs.
Explanation
Behavioral isolation is a term used in biology to refer to the absence of interbreeding between species of animals that have different courtship and mating rituals. An example of this phenomenon is evidenced in the sounds emitted by two different species of crickets since the females of each species are attracted only by the sounds of the males of their species. According to the above, the correct answer is B. Two species of meadowlark have different mating songs because females of one meadowlark specie is attracted only by the songs of male of her specie due to a reproductive behavior.
Manatees and seals both share some phenotypic similarities that are adaptations to an aquatic environment. However, seals evolved from a bearlike carnivore and manatees evolved from a hoofed mammal. This example shows that __________.
a. evolution is not always unidirectional.
b. evolution can occur rapidly for one species while the other species stays relatively unchanged.
c. similarity is a good predictor of how long it has been since two species shared a common ancestor.
d. evolution is not always divergent.
They are about as different as a leopard and a cow.
Meaning both are mammals of roughly similar size, and sharing a vaguely similar habitat. That’s the end of similarities.
Seals are carnivorous and manatees are plant eaters, and taxonomically they are in different orders. Seals spend much of the time on land, while manatees are completely aquatic. Seals have thick layer of fat and are adapted to Arctic water, while manatees, despite their roly-poly appearance, have almost no fat and do not handle cold water well at all. Here is the closest a manatee ever gets to an iceberg.
Manatees and seals both share some phenotypic similarities that are adaptations to an aquatic environment. However, seals evolved from a bearlike carnivore and manatees evolved from a hoofed mammal. This example shows that Evolution is not always divergent.
Which statement best describes evolution in a population?
Answer:
D.
Explanation:
we learned about this in living environment! for example: humans used to have tails but the humans without tails offspringed with the ones with tails causing the genetics to take over making different traits appear in offspring. Therefor, the answer is D.
Answer:
D
Explanation:
The inner planets are _____ because of their closeness to the sun
Answer:
The inner planets, or terrestrial planets, are the four planets closest to the Sun: Mercury, Venus, Earth, and Mars. Figure below shows the relative sizes of these four inner planets.
Explanation:
thank me later
What kind of rock is most Karst topography found in?
A)Limestone
B) Slate
C) Sandstone
D) Granite
Answer:
limestone
Explanation:
Karst is most strongly developed in dense carbonate rock, such as limestone, that is thinly bedded and highly fractured. Karst is not typically well developed in chalk, because chalk is highly porous rather than dense, so the flow of groundwater is not concentrated along fractures.
Answer: answer is A Limestone
The rate of illness among individuals who live along the coast of the Gulf of Mexico was compared with that of the general population of a state. This type of experimental design is called a(n) O A. clinical trial B. geographical cohort study O c. C. age cohort study O D. in vitro observation
Answer:
The correct option is B.
Explanation:
A cohort study can be used in medicine to draw comparisons between a group with similar characteristics and a much larger group where the initial group is drawn from. The basis of comparison usually defines the type of cohort study been discussed. The question compared individuals from a location as against those from a larger surrounding, thus this type of cohort study can be referred to as a geographical cohort study.
NOTE: It isn't a clinical trial as none of the two compared groups was given any form of treatment or dose.
Answer:
Geographical cohort study
Explanation:
just got the answer correct
8. Farmer Tom soon wanted to start breeding his plants so that they are resistant to disease while producing
more fruit per plant. Which plants should the farmer cross to get the desired (wanted) combination of
traits?
Plant Variety
Fast growing
Resistant to
a. 1 and 2
b. 2 and 4
C. 1 and 3
d. 3 and 4
Answer:
A) 1 and 2
Explanation:
MY
A bicycle tire pump has a piston with area 0.38 in. If a person exerts a force of 29 lb on the piston while inflating a tire, what pressure does this
produce.on the air in the pump?
.
Answer:
OMGGGG WANNA WORK ON THIS TOGETHER I NEED THIS ONE TOOOOOO
What will the new mRNA strand look like if the DNA strand reads ATT- ACG
Answer:
UAA-UGC
Explanation:
remember in RNA there is no thymine instead there is uracil so A always pairs with U and C always pairs with G.you can also remember it as Apple Under and Car Garage. :)
The community of a pond is made up of ?
Answer:
The community is made up of fish, insects, and all living organisms
Explanation:
Answer:
Explanation:
plants, animals, microorganisms, and a surrounding environment
The number of ducks in a pond is equal to the square root of the number of fish, and the number of turtles is equal to the cube root of the number of fish. The number of fish in the pond is more than 1 but less than 100. There are no fractional or negative numbers of ducks, fish, or turtles.
Answer:
There are 64 fish, 8 ducks and 4 turtles.
Explanation:
From the question, there can be from 2 to 99 fish in the pond. However, there cannot be fractions in the number of fish, ducks or turtles. Hence, the number of fish must have both of a perfect square and perfect cube. The perfect squares from 2 to 99 are 4, 9, 16, 25, 36, 49, 64 and 81. The perfect cubes from 2 to 99 are 8, 27 and 64. Since only 64 fits both criteria, the number of fish is 64. The number of ducks is the square root of number of fish, which is the square root of 64. The square root of 64 can be either positive 8 or negative 8. However, there cannot be negative numbers, so there are 8 ducks in total. The number of turtles is the cube root of the number of fish, which is the cube root of 64 and it is 4.
plant reproduction requires the presence of auxins, as well as a large amount of sugar for energy. which two main plant tissues work together to release sugar and carry hormones so that reproduction can take place?
Answer:
The two main plant tissue that works together to release sugar and carry hormones so that reproduction can take place are: The ground and the vascular tissue.
Explanation:
The two main plant tissues that work together to release sugar and carry hormones so that reproduction can take place are Xylem and phloem.
What do you mean by Hormones?Hormones may be defined as a chemical delivered by endocrine glands and discharged into the blood and fascinated to a distantly located target organ.
Xylem is responsible for the transportation of water from the ground to the stem via roots, while phloem, the vascular tissue responsible for the transportation of dissolved sugar from the leaves to the other parts of the plants.
Therefore, it is well described above.
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What impediments do you think a rover might face, whether physical or technological, while exploring and collecting samples on Mars?
Answer:
Degradation of mobility,
Instability and collision (human or machine),
Mechanical failure, and.
Rovers that move too slowly.
The Impediments that a rover would face while exploring and collecting samples on Mars are :
Mechanical failure Collision Reduction/breaking down of mobility Slow movement of RoverRovers are exploration devices that are used to collect samples/information about a terrain ( mostly in space like Mars ) and some of the samples they collect include : dust, sand and rocks.
Some of the technological impediments face by space rovers includes: mechanical failure ( the failure of rover to work efficiently due to wear and tear or other mechanical factors. )
The Rovers can collide with each other or even human due to force of gravity. the degradation of mobility is another physical impediments while the slow movement of the Rover in Mars due to gravitational forces is considered a physical impediment.
Hence we can conclude that some of the physical and technological impediments faced by Rover are : Mechanical failure, Collision, Reduction/breaking down of mobility ,Slow movement of Rover
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PLEASE HELP ASAP!! How neurotransmitters carry nerve impulses across the synaptic cleft
Neurotransmitters travel across the synapse between the axon and the dendrite of the next neuron. Neurotransmitters bind to the membrane of the dendrite. The binding allows the nerve impulse to travel through the receiving neuron
Another way of thinking is
Neurons talk to each other across synapses. When an action potential reaches the presynaptic terminal, it causes neurotransmitter to be released from the neuron into the synaptic cleft, a 20–40nm gap between the presynaptic axon terminal and the postsynaptic dendrite (often a spine)
Hope this helps =)
Explanation: Neurotransmitters like to travel across the synapse between the axon and the dendrite of the next neuron. They then attach to the membrane of the dendrite. This connection makes it possible for the nerve impulse to travel through the receiving neuron.
Carbonic anhydrase is an enzyme found in the cytoplasm of a cell. You genetically modified the gene which produces the mRNA for carbonic anhydrase to now include a signal sequence. What will happen when carbonic anhydrase initially binds to a ribosome
Answer:
Explanation:
Carbonic anhydrase modification is a promising strategy for improving the potency and stability of carbonic anhydrase, which is used to expedite CO2 uptake from flue gases. Carbonic anhydrase can be genetically engineered to increase CO2 conversion, absorption of CO2 from a gaseous state into bioactive compounds, and mineral synthesis.
When carbonic anhydrase attaches to a ribosome, the carbonic anhydrase will now be synthesized at first by the free ribosome, after which the ribosome will become a bound ribosome and the protein will be present in the rough Endoplasmic reticulum when the synthesis is complete.
In this case, when carbonic anhydrase initially binds to a ribosome - Carbonic anhydrase initially will be synthesized by free ribosomes, but then these ribosomes then will become bound ribosomes and the protein will be in the rough ER when synthesis is complete
Carbonic anhydrase is an enzyme that helps the rapid conversion to carbonic acids from carbon dioxide and water with protons and bicarbonate ions.
Classified as a metalloenzymeThe modification in the carbonic anhydrase enhances the potency and stability of the enzyme.It can be modified to increase CO2 conversion, absorption of CO2 from a gaseous state into bioactive compounds, and mineral synthesis.Thus, In the case of carbonic anhydrase bound to a ribosome, at first, the carbonic anhydrase will be synthesized by the free ribosome and later the ribosome will become a bound ribosome and the protein will be present in the rough Endoplasmic reticulum once the synthesis process completes.
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17. Why is learning theory valuable for a dog trainer?
O A. A dog trainer can use the principles, knowing they've been tested under
experimental conditions.
O B. It allows the trainer to understand the dog from an anthropomorphic point of view.
O C. It provides a way for trainers to quantify behavior.
O D. It assures that all trainers approach training from the same perspective.
Answer:
a
Explanation:
Can someone explain what this text means?
Encasing the cell is a membrane with special gates, channels and pumps that let in or
force out selected molecules.
Answer:
The text is explaining a cell membrane.
Explanation:
A cell membrane is made up of a phospholipid bilayer that acts as a kind of "skin" for the cell. The membrane helps the cell maintain homeostasis and filter out harmful particles. Elements like oxygen are allowed to pass through via protein channels, which act as gates. Does this answer your question?
Answer: It contains DNA, that's what is in the nuculus.
Explanation:
A boxer has been jumping rope for an hour. His leg muscles are burning and he feels weak. Which of the following most likely explains the burning he feels in his muscles? A. Lactate buildup B. Aerobic respiration C. High oxygen levels D. Ethanol buildup
Answer:The answer is Lactate buildup
Explanation: