What are fossils? How Petrol and gas were created?

Fossils are the remains or traces of ancient organisms, such as plants or animals, preserved in the earth's crust.

Petrol and gas are created over millions of years by the heat and pressure of the Earth's crust on organic matter trapped in sedimentary rocks.

Examples of fossils include the preserved bones and teeth of animals, the impressions of plants in rocks, or the imprints of insects in tree sap.

Natural gas is formed by the breakdown of organic matter over millions of years, usually in areas lacking oxygen.

Petroleum is formed from the remains of marine organisms that have been transformed by heat and pressure over millions of years.

Fossil fuels are often used to power cars, trucks, and other machines, and to generate electricity.

Fossil fuels are nonrenewable resources, meaning that once they are used up, they cannot be replaced.

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