Fossil Fuels: Formation

Fossil fuels, including coal, oil, and natural gas, supply 90% of the world's energy. They are hydrocarbons formed from prehistoric plants and animals. The formation process involves photosynthesis, decomposition, and compression over millions of years. Oil and gas originate from marine organisms, while coal comes from land vegetation. These fuels are extracted from deep underground. However, fossil fuels are finite and unsustainable as they cannot be replenished within human time scales.

What are the three main types of fossil fuels mentioned in the text?

How are fossil fuels formed from prehistoric plants and animals?

What biological process do plants use to convert the sun's energy into usable energy?

Explain the process that leads to the formation of oil and gas from marine organisms.

Why are fossil fuels considered unsustainable as an energy source?