Many different processes, both natural and human-caused, can release carbon dioxide into the atmosphere. Which of the following processes can occur naturally and adds carbon dioxide to the atmosphere?

Question

Many different processes, both natural and human-caused, can release carbon dioxide into the atmosphere. Which of the following processes can occur naturally and adds carbon dioxide to the atmosphere?
 A. 
the burning of coal in a coal-fired power plant
 B. 
the burning of natural gas on a stove
 C. 
the burning of petroleum in an automobile
 D. 
the burning of plant life in a forest fire

GPT-4o mini · Answer

The process that can occur naturally and adds carbon dioxide to the atmosphere is:

D. the burning of plant life in a forest fire.

Forest fires can happen naturally due to lightning strikes or other natural causes, and they release carbon dioxide as a result of combustion. The other options (A, B, and C) involve human-caused combustion of fossil fuels, which is not a natural process.