The Cycles of Matter

Question 1

Which of these nutrients can be found in all organic compounds?

Revolt · Accepted Answer

carbon

Question 2

Which statement best describes a human influence on the biogeochemical cycles?

Revolt · Accepted Answer

increased eutrophication caused by high levels of nitrogen and phosphorous

Question 3

What would happen if there were no condensation stage in the water cycle?

Revolt · Accepted Answer

Water could not convert from a gas to a liquid.

Question 4

Which process allows water to enter the atmosphere?

Revolt · Accepted Answer

evaporation

Question 5

Osteoporosis is a disease that affects the bones and leads to an increase in bone fractures. Osteoporosis is most likely to be affected by which cycle?

Revolt · Accepted Answer

phosphorus

Question 6

The phosphorus cycle differs from the biogeochemical cycles in that

Revolt · Accepted Answer

it does not have an atmospheric reservoir.

Question 7

Which process plays an important role in the biogeochemical cycles of carbon, nitrogen, and phosphorus?

Revolt · Accepted Answer

decomposition

Question 8

Why are bacteria a necessary part of the nitrogen cycle?

Revolt · Accepted Answer

Other living things cannot use atmospheric nitrogen.

Question 9

What is the effect of the biogeochemical cycles?

Revolt · Accepted Answer

recycling matter through the biosphere

Question 10

Which of the following would be a result of eutrophication of a lake?

Revolt · Accepted Answer

hypoxia, or low levels of oxygen

The Cycles of Matter Answers

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