Question

What is a fossil fuel?

Answer 1

Fossil fuels: Fossil fuels are natural fuels, which are formed by the decomposing of dead plants and animals, found in the Earth's crust, and contain Carbon$\left(\mathrm{C}\right)$ and Hydrogen$\left({\mathrm{H}}_2\right)$ as the main elements.

Examples of fossil fuels: Coal, Petroleum, and Natural gas.