Question

How do humans cycle carbon from the biosphere to the atmosphere?(1 point)
Responses

by eating plants
by eating plants

by planting vegetable crops
by planting vegetable crops

by respiration
by respiration

by driving cars that use gasoline for fuel

Answer 1

Humans cycle carbon from the biosphere to the atmosphere primarily **by respiration**. In this process, humans and other animals inhale oxygen and exhale carbon dioxide, which is then released into the atmosphere.