Why are changes in the global carbon cycle important?
A)Carbon is the chief source of food,and burning it reduces available food for primary consumers.
B)Global carbon availability is directly related to the water cycle.
C)Carbon dioxide is a greenhouse gas,and increasing atmospheric concentrations could alter Earth's climate.
D)Carbon can be recycled only a limited number of times.

Question

Quizplus · Accepted Answer

Carbon dioxide is a greenhouse gas that traps heat in the atmosphere and can lead to warming of the planet. Increasing atmospheric concentrations of carbon dioxide can alter Earth's climate and have significant impacts on the environment and human societies. Understanding changes in the global carbon cycle is important for predicting and mitigating the impacts of climate change. A and D are incorrect because they do not provide a comprehensive understanding of the importance of changes in the global carbon cycle. B is incorrect because while carbon and water cycles are linked, changes in the carbon cycle are not directly related to the water cycle.

Why Are Changes in the Global Carbon Cycle Important