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Geology/Geography/Oceanography/Atmospheric Sciences
Earth System History
Quiz 10: Major Geochemical Cycles
The Most Important Greenhouse Gas Is
Question 1
Multiple Choice
The most important greenhouse gas is A) phosphorus. B) oxygen. C) nitrogen. D) carbon dioxide.
D
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Q 2
Reservoirs expand and contract because of changes in the rate at which they gain or lose their contents, and this occurrence is known as A) flux. B) feedback. C) respiration. D) photosynthesis.
Q 3
Photosynthesis requires two things, and they are A) nitrogen and phosphorus. B) water and carbon dioxide. C) silicon and oxygen. D) iron and magnesium.
Q 4
__________ is a by-product of photosynthesis. A) Water B) Sugars C) Oxygen D) Carbon dioxide
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