Final answer:
Fossil fuels are mainly carbon and hydrocarbons, with variations in chemical structures for coal, oil, and natural gas.
Explanation:
Fossil fuels are primarily composed of carbon and hydrocarbons. Hydrocarbons are molecules made up of carbon and hydrogen only. Different types of fossil fuels such as coal, oil, and natural gas have varying chemical structures, with coal being solid, oil liquid, and natural gas gaseous.
Learn more about Fossil fuels composition here:
https://brainly.com/question/13207138
