Water Cycle
Nitrogen Cycle
Carbon Cycle
Human Impact
Phosphorus Cycle
100
Water falling to the earth from condensed clouds is known as what?
What is precipitation.
100
What is wrong with atmospheric nitrogen?
What is "we can't use it".
100
Which biological process do plants use to take in carbon dioxide from the atmosphere and get energy?
What is photosynthesis.
100
The majority of the phosphorus in the world is stored in what?
What is rocks.
200
Once that water falls to the other, what is it considered?
What is groundwater.
200
Who "fixes" the nitrogen into a form that we can use?
What is bacteria (either in the soil or in the roots of legumes).
200
Name two ways that carbon is released into the atmosphere using biological processes?
What is cellular respiration and decomposition.
200
Phosphorus is used not only in energy and in cell processes (like enzymes and transport), but also in what?
What is forming DNA and RNA.
300
How does ocean/lake water return to the atmosphere?
What is evaporation.
300
Animals get most of the nitrogen they need by what?
What is "consuming plants or other animals that have the nitrogen".
300
Humans have contributed more carbon to the carbon cycle by doing what?
What is burning fossil fuels.
300
What must happen to the rock in order for plants to absorb the phosphorus within them?
What is break down into soil.
400

Which process is where ice directly converts into water vapors without converting into liquid water?

What is sublimation.

400
Planting legumes in a field the year before a crop will do what to the productivity of your field?
What is "increase productivity because there is more nitrogen in the soil".
400
How do herbivores and carnivores get the carbon that they need?
What is "by consuming plants and/or animals that have carbon".
400
Herbivores and carnivores obtain phosphorus by doing what?
What is "consuming plants and/or animals that have phosphorus".
500
What is "transpiration"?
What is "when leaves release water through their underside to evaporate".
500
Nitrogen is used in the body to make what?
What is DNA and proteins.
500
Why do we need carbon?
What is "to form DNA and proteins". The creation of cells is also acceptable.
500

What is eutrophication?

Excess richness of nutrients in a lake or other body of water, frequently due to runoff from the land, which causes a dense growth of plant life and death of animal life from lack of oxygen.

500

Phosphorus is returned to the rock cycle from plants and animals by what?

What is "hardening into solid phosphate after being sediment".

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