Question

fossil fuels are made up of carbon - based molecules that have been compacted into a dense form, such as coal or oil. oil is used to make gasoline.
this person is filling a car’s gas tank with gasoline. the gasoline will be burned in the car’s engine. as the gasoline burns, the molecules in the gasoline react with oxygen to produce water vapor, co₂, and other chemicals. this reaction releases energy as heat.
complete the sentence.
when fossil fuels burn, much of the energy is ____ in the form of heat, and carbon is ____ in the form of carbon dioxide.
options:
released... released
released... absorbed
absorbed... absorbed
absorbed... released

Explanation:

1. Analyze the first blank: The text says "This reaction releases energy as heat", so energy is "released" when fossil fuels burn.
2. Analyze the second blank: When fossil fuels (like gasoline) burn, carbon in the fuel combines with oxygen to form carbon dioxide, so carbon is "released" in the form of carbon dioxide (since it's part of the products of the reaction being released).

Answer:

released... released