Food webs describe who eats whom in an ecological community. Made of interconnected food chains, food webs help us understand how changes to ecosystems — say, removing a top predator or adding nutrients — affect many different species, both directly and indirectly.
Phytoplankton and algae form the bases of aquatic food webs. They are eaten by primary consumers like zooplankton, small fish, and crustaceans. Primary consumers are in turn eaten by fish, small sharks, corals, and baleen whales. Top ocean predators include large sharks, billfish, dolphins, toothed whales, and large seals. Humans consume aquatic life from every section of this food web.
A student wishes to measure the speed of a toy car at the bottom of an inclined plane. Which information is needed to calculate speed? O A the mass of the car and the height of the inclined plane the friction of the surface of the inclined plane and the mass of the car the length of the inclined plane and the time for the car to descend the inclined plane the length of the car and the time for the car to descend the inclined plane
Answer:
Distance/time
Explanation:
=speed
Use the drop-down menus to select the names of the labeled structures.
A:
B:
C:
Please help me...
3 questions I will give brainiest if you answer all 3.
question 3 has 2 images
Answer:
1.A
2.C
Explanation:
The main factors that determine aquatic biomes include
Amount of sunlight
Types of plants
Dissolved substance
Temperature and precipitation
Select all that apply
first and last answer choices
T or F... Carbon dioxide (CO2) blocks SUNLIGHT from hitting the surface of the Earth. *
True
False
What resources can we manage what should we get rid of.
Answer:
Manage financial resources, inventory, human skills, production resources, or information technology (IT) and natural resources. get rid of plastic
Explanation:
please help will give brainiest
Answer:
meiosis
Explanation:
chromosomes are dividing
LEASE HELP ME, SOMEBODY. I'LL MARK THE BRAINLIEST.
Answer:
Control: sat in silence
Experiment: with music
Independent: The music or no music
Dependant: Their heart rate and pulse
Explanation: Control group: is the one that sat in silence
The one that listened to music is the Experimental Group
The independent variable is the thing that they change, the music
And the dependant variable is what is being measured, their pulse and heart rate
Carbon dioxide is carried by blood to the lungs through _____. [FREE BRAINLIEST]
A. capillaries
B. the heart
C. veins
D. arteries
Answer:
D. arteries
Explanation:
true or false, pls help me out
Answer:
false
Explanation:
hope this helps :)
Answer:
false
Explanation:
pressure increases with depth not decreases , pls mark me brainliest right
The diagram below shows a simple version of the carbon cycle... How are the processes shown with yellow arrows different from the processes shown with red arrows? *
The yellow arrows are all caused by human activities.
The yellow arrows are all completely natural processes.
The yellow arrows all add to the greenhouse effect.
The yellow arrows all take carbon out of the atmosphere.
Answer:
b. The yellow arrows are all completely natural processes.
In the given carbon cycle, the yellow arrows are all caused by human activities. The correct option is A.
What is carbon cycle?The carbon cycle is nature's way of recycling carbon atoms, which commute onto from atmosphere into lifeforms on Earth and then again into the environment.
The maximum amount of carbon is stored in rocks and sediments, with the left over in the ocean, atmosphere, and living organisms.
The carbon cycle describes how carbon moves between various 'carbon reservoirs' on Earth.
It is critical for our planet's climate and carbon balance to remain stable. Carbon is the backbone of the Earth, and the carbon cycle regulates it naturally. The Earth would be frozen if it didn't have it.
In the given chart, the decomposition, fossil fuels, etc. all are done through humans, hence the yellow arrows are indicating man made activities.
Thus, the correct option is A.
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When was there more variation? (PLEASE ANSWER ASAP AND CORRECTLY, I WILL AWARD BRAINLIEST) (image below)
These bar graphs do not show the amount of variation in the population.
There was the same amount of variation in spot size 40 years ago and last year.
There was more variation 40 years ago.
There was more variation last year.
Answer:
There was more variation 40 years ago. Because 40 yrs ago the spot size was more to the right last year the spot size was more in the middle.
Explanation:
Answer:
there was more variation last year
Explanation:
so here's my thinking- 40 years ago the guppies' spot size ranged from 5-10 and last year they ranged from 3-9 seeing as how 10-5 is 5 and 9-3 is 6 and how 6>5 there was more variation last year compared to 40 years ago.
good luck :)
i hope this helps
**please let me know if this was wrong**
Some organisms reproduce sexually. Other organisms reproduce asexually. What are some benefits of asexual reproduction?
A. It benefits organisms that that are immobile.
B. It gives offspring the genetic traits to survive in a particular environment.
C. It uses less energy.
D. All of the above.
Identify each process as weathering or erosion.
Answer:
erosion and a, weatheri g and b
What are genetics? (short definition)
Answer:
Seriously?
Explanation:
T or F... Humans have changed the TOTAL AMOUNT of carbon on the Earth. *
True
False
Answer:
true
Explanation:
Which list of characteristics describes organisms classified as animals?
A. Unicellular, prokaryotic, autotrophic
B. Multicellular, eukaryotic, heterotrophic
C. Unicellular, eukaryotic, heterotrophic
D. Multicellular, eukaryotic, autotrophic
Animals are organisms that possess the following characteristics: multicellular, eukaryotic, heterotrophic.
WHAT ARE ANIMALS:
Animals are organisms that belong to a kingdom called ANIMALIA. Animals are a group of organisms that possess the following characteristics as the basis of their classification:Heterotrophic: All animals are heterotrophic meaning that they cannot synthesize their own food, hence, they rely on other organisms for their energy source. Eukaryotic: All animals have a true membrane bound nucleus in their cells, hence, they are said to be EUKARYOTIC. Multicellular: All animals have more than one cell to carry out specific tasks in their body system.Hence, all animals are multicellular, eukaryotic, and heterotrophic.
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Below is a carrying capacity graph of a meerkat population in an African savanna. Meerkats are omnivores and eat a variety of organisms, such as fruit, insects, scorpions and lizards. Predators of the meerkat include hyenas and eagles. What is a possible cause for the sudden change in population of meerkats after year 3?
A. Warmer weather increased the number of insects.
B. The number of eagles was reduced due to disease.
C. A fire reduced the amount of grass and fruit available.
D.A lack of predators increased the lizard population.
A fire reduced the amount of grass and fruit available.
What is carrying capacity in ecology?
In ecology, carrying capacity is measured as the maximum load of an environment. The physical features present in the environment act as limiting factors (e.g. food, water, competition, etc.). Thus, the population limit can be expected to depend on these factors.
What is carrying capacity of an ecosystem?
Populations grow at a rate limited by the availability of the Earth’s resources. A population may grow at a faster rate and follow a J-shaped curve. When the birth rate surpasses the death rate of the species, this results in exponential growth.
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PLEASE HELP WILL MARK BRAINLIEST!!
Answer:
i think that it will be :
Explanation:
1-coal
2-hydroelectric power
3-oil
4-nuculear power
*2&3 i amn't sure about them*
hi can u please do a cell foldoble about what they contane is for a grade plz
From sea level, the biosphere goes up about 19km. What is the thickness of the biosphere in meters?
Answer:
1 km= 1000 meters
9 km= 9000 meters
19 km= 19000 meters
9000
+19000
----------
28000 meters
Explanation:
Hope this helps!
Please mark me as Brainlieast!
Explanation:
Please complete he following questions below before Friday, March 19th at 11:59 PM EST.
1. Write down where you have heard of minerals before, and the names of any minerals that play a role in your everyday life.
2. What is the density of cinnabar?
3. You might be familiar with term organic food. How does this meaning of organic differ from the scientific meaning?
4. What type of minerals might a geologist expect to find near the site of an ancient lava flow? Explain.
5. Why do diamonds only form in certain spots in the mantle?
Answer:
Do u still need the answer?
Explanation:
Particle size directly affects which of the following soil properties?
A. pH and composition
B. pH and texture
C. composition and humus
D. texture and permeability
Explain what is meant by ''Day Zero''
Which of the following does the endocrine system regulate?
Hormones
Reflexes
Respiration
Senses
Answer:
Hormone
Explanation:
Which of the following does the endocrine system regulate?
Answer:
The endocrine system regulates hormones.
Hope this helps!!!
A habitat that receives little or no precipitation will most likely be suitable for organisms that -
spend most of the day in the sunlight.
are covered in thick fur to keep warm.
store large quantities of water internally.
hibernate for long periods of time.
Sunlight is not always a requirement- but less water = more water that needs stored. Think - succulents, for example. Succulents live in mid - low shade and store water because they live in an environment with little precipitation.
What is Precipitation?Any liquid or frozen water that condenses in the atmosphere and falls to the ground is referred to as precipitation. Rain, sleet, and snow are only a few of its various manifestations.
Precipitation is one of the three main processes that make up the global water cycle, together with evaporation and condensation.
Water vapor in the clouds condenses into increasing-sized droplets of water, forming precipitation. The drips hit the ground when they are sufficiently hefty. The water droplets may freeze to produce ice if a cloud is colder, as it would be at higher elevations.
Therefore, Sunlight is not always a requirement- but less water = more water that needs stored. Think - succulents, for example. Succulents live in mid - low shade and store water because they live in an environment with little precipitation.
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Describe the process in the mantle that causes plates to move. In your response, provide the force driving this process and at least one piece of evidence to support this idea.
If you are standing still, but breathing much faster then necessary, what will happen? [FREE BRAINLIEST]
A You will exhale too much oxygen.
B You will inhale too much carbon dioxide.
C You will exhale too much carbon dioxide.
D All of the above.
Answer:
you will exhale too much carbon dioxide
Explanation:
Answer: i think it is b forgive me if im wrong its not c for sure
Explanation:
what do humans call their source of energy
Answer:
food
Explanation:
During which year was there the greatest difference between the number of hawks and squirrels?
A] 2007
B] 2010
C] 2011
D] 2012
Answer:
2012
Explanation:
2012 has the most amt