Question

hy 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.

Answer 1

Options III and IV are correct

Step-by-step explanation:

III. Increasing atmospheric concentrations of carbon dioxide could alter Earth's climate. IV. By using fossil fuels we are destroying a nonrenewable resource.