Coal, oil, and natural gas are examples of what, which forms when organic matter is under pressure for millions of years?

Coal, oil, and natural gas are examples of what, which forms when organic matter is under pressure for millions of years?

• Correct Answer: fossil fuels
• nuclear fission
• complex carbohydrates
• solar fuels

Explanation: Millions of years ago, there were so many dead plants and animals that they could not completely decompose before they were buried. They were covered over by soil or sand, tar or ice. These dead plants and animals are organic matter made out of cells full of carbon-containing organic compounds (carbohydrates, lipids, proteins and nucleic acids). What happened to all this carbon? When organic matter is under pressure for millions of years, it forms fossil fuels. Fossil fuels are coal, oil, and natural gas.

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