Answer:
Carbon
These fossil fuels are all Hydrocarbons, they are compounds formed from only two elements, Carbon and Hydrogen. Fossil fuels are used to produce energy; in the home they are burned to produce heat, in large power stations they are used to produce electricity and they are also used to power engines.
Explanation:
Answer:
Carbon.
we need it because it is a key ingredient in plastics, gasoline, and other useful materials.
