Petroleum

Before dinosaurs , oceans covered most of the earth. The oceans were filled with small sea animals. Sand covered dead plants,and animals. Heat and weight turned them into petroleum. It is a fossil fuel, because it was made from dead plants and animals. The energy came from the same energy in plants and animals. Their energy came from the sun. Petroleum is a nonrenewable energy source, because the united states can not drill enough oil to meet our needs. We use petroleum every single day. It can pollute the air like many other things. Petroleum is found underground, you can not find it anywhere else. It is mainly a mixture of molecules. It is a raw material. Most of the time people call it oil. It can be yellow or black. Petroleum can be found in reservoirs. It is also called crude oil. The top mfive places to get oil are: Russia, Sandi Arabia, United States, Iran, and China.