The Cycles of Matter

Question 1

What
is the role of the water cycle in sustaining life?

Revolt · Accepted Answer

The water cycle is important for sustaining life, because water is an essential component of all living organisms. Organisms require water to produce energy. The water cycle sustains life by providing a continuous source of usable water to living organisms.

Question 2

What
is the relationship between the oxygen cycle and the carbon cycle?

Revolt · Accepted Answer

The oxygen cycle and the carbon cycle are related through the processes of photosynthesis and respiration. Plants produce oxygen during photosynthesis and animals produce carbon dioxide during respiration. Animals consume oxygen during respiration and plants consume carbon dioxide during respiration.

Question 3

The carbon cycle involves an exchange of carbon between _______.a.the geosphere and atmosphereb.the atmosphere and hydrospherec.the geosphere and hydrosphered.the geosphere, hydrosphere, and atmosphere

Revolt · Accepted Answer

D: D

Question 4

Biogeochemical cycles _______.a.are not essential for lifeb.move through abiotic and biotic regionsc.are the result of natural disastersd.provide the greatest amount of energy for the Earth

Revolt · Accepted Answer

B: B

Question 5

Compare the nitrogen, carbon, and oxygen cycles.

Revolt · Accepted Answer

The nitrogen, carbon, and oxygen cycles are all biogeochemical cycles that involve the movement of an element through different systems. Each of these nonliving elements is incorporated into living organisms at some point in the cycle. The nitrogen, carbon, and oxygen cycles are all essential for life.

Question 6

Explain the possible consequences if the Earth continues to absorb more energy than it
emits.

Revolt · Accepted Answer

If the Earth continues to absorb more energy than it emits, because of a continued increase of greenhouse gases, the Earth’s temperature will most likely begin to increase.

Question 7

The process in which nitrogen is converted into a usable form for life is called _______.a.nitrogen fixationb.photosynthesisc.greenhouse effectd.photolysis

Revolt · Accepted Answer

A: A

Question 8

What is the ultimate source of energy for the Earth?a.photosynthesisb.respirationc.the sund.nutrient cycles

Revolt · Accepted Answer

C: C

Question 9

How is the phosphorus cycle different from the oxygen, nitrogen, and carbon cycles?a.It occurs at the fastest rate.b.It is not essential to life.c.It does not occur naturally.d.It does not involve the atmosphere.

Revolt · Accepted Answer

D: D

Question 10

Explain how the need for energy is the driving force of the oxygen
cycle.

Revolt · Accepted Answer

Living organisms require energy to sustain life. Photosynthesis is the driving force for the oxygen cycle and the driving force for photosynthesis is the need for energy. Plants obtain needed energy through the process of photosynthesis. Other organisms draw oxygen from the atmosphere in their pursuit of energy and breathe out carbon dioxide, which plants use in photosynthesis to create more oxygen.

The Cycles of Matter Answers

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