Oil and gas are formed from what?

Oil and natural gas were formed from the remains of prehistoric plants and animals, that's why they're called fossil fuels.

Oil and natural gas were formed from the remains of prehistoric plants and animals-that's why they're called fossil fuels. Hundreds of millions of years ago, prehistoric plant and animal remains settled into the seas along with sand, silt and rocks.

Explanation: Deep in the Earth, oil and natural gas are formed from organic matter from dead plants and animals. These hydrocarbons take millions of years to form under very specific pressure and temperature conditions.