Question

When humans burn fossil fuels, most of the carbon quickly enters the_______

as carbon dioxide.
•hydrosphere
•atmosphere
•geosphere
•biosphere

Answer 1

The answer to your question is “atmosphere”

Answer 2

Atmosphere.

Step-by-step explanation:

Carbon moves from fossil fuels to the atmosphere when fuels are burned. When humans burn fossil fuels to power factories, power plants, cars and trucks, most of the carbon quickly enters the atmosphere as carbon dioxide gas.