Multiple Choice
Which of these statements is correct ?
A) The amount of carbon on Earth is essentially constant.
B) The amount of carbon on Earth fluctuates with the seasons.
C) The amount of carbon on Earth is increasing because of plant and animal growth.
D) The amount of carbon on Earth is decreasing because of the consumption of carbon-based fuels.
E) All of these are correct.
Correct Answer:

Verified
Correct Answer:
Verified
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