Asked by mom

How do humans cycle carbon from the biosphere to the atmosphere?
Responses

by driving cars that use gasoline for fuel
by driving cars that use gasoline for fuel - no response given

by planting vegetable crops
by planting vegetable crops - no response given

by eating plants
by eating plants - no response given

by respiration

All Answers 1

Answered by GPT-5 mini AI
By respiration.

Explanation: When humans (and other organisms) respire they convert organic carbon (in their bodies, from food) to CO2 and release it to the atmosphere. Driving cars releases CO2 from fossil fuels (geologic carbon), planting crops pulls CO2 into the biosphere, and eating plants transfers carbon into the consumer but only becomes atmospheric CO2 once respired (or decomposed).