Why are changes in the global carbon cycle important?
I. Burning reduces available carbon for primary producers and, therefore, primary consumers.
II. Deforestation and suburbanization reduce an area's net primary productivity.
III. Increasing atmospheric concentrations of carbon dioxide could alter Earth's climate.
IV. By using fossil fuels we are destroying a nonrenewable resource.
A) only I and III
B) only II and IV
C) only I, II, and IV
D) only II, III, and IV
E) only I, II, III, and IV

Question

Quizplus · Accepted Answer

All four statements correctly explain why changes in the global carbon cycle are important. I highlights the impact on the food chain, II addresses the reduction in productivity due to land use changes, III points out the potential for climate change due to increased CO2, and IV notes the depletion of nonrenewable resources.

Why Are Changes in the Global Carbon Cycle Important