The carbon that is increasing the levels of carbon dioxide in our atmosphere comes largely from fossil fuels.

Question

Quizplus · Accepted Answer

Fossil fuels, such as coal, oil, and natural gas, are made of the remains of once-living organisms that have been buried underground for millions of years. When we burn these fuels, we release the carbon they contain into the atmosphere as carbon dioxide, which contributes to the increase in atmospheric carbon dioxide levels.

The Carbon That Is Increasing the Levels of Carbon Dioxide