Question

question 11 of 30 what product is released into earth’s atmosphere through the combustion of fossil fuels?
a. methane
b. oxygen
c. hydrocarbon
d. carbon dioxide

Explanation:

Fossil fuels (like coal, oil, natural gas) are primarily composed of carbon and hydrogen. When they undergo combustion (burning) in the presence of oxygen, the main chemical reaction produces carbon dioxide ($\ce{CO_2}$) and water. Methane is a fossil fuel itself (or a product of other processes, not the main combustion product of fossil fuels). Oxygen is a reactant in combustion, not a product. Hydrocarbons are the fossil fuels, not the product of their combustion. So the product released into the atmosphere from fossil fuel combustion is carbon dioxide.

Answer:

D. Carbon dioxide