Question

What is the source of carbon dioxide gas in air​

Answer 1

Answer:

Carbon dioxide is added to the atmosphere by human activities.

Answer 2

Answer:

Carbon dioxide is added to the atmosphere by human activities. When hydrocarbon fuels (i.e. wood, coal, natural gas, gasoline, and oil) are burned, carbon dioxide is released. During combustion or burning, carbon from fossil fuels combine with oxygen in the air to form carbon dioxide and water vapor.