Summary
When these living things died, they were buried under layers of earth.
Over millions of years, the earth’s heat and pressure squeezed them into fuel.
Finding dinosaur bones near oil wells shows dinosaurs helped make some of this fuel.
Key Points
4 points1
Fossil fuels are formed from the remains of long‑dead organisms.
2
Heat and pressure deep underground change these remains into coal, oil, and natural gas.
3
Carbon clues and nearby fossils tell scientists the fuel’s ancient source.
4
Dinosaurs are part of the story because their bones are sometimes found with oil deposits.
New Words to Learn
4 wordsfossil fuels
energy sources like coal, oil, and gas that came from old plants and animals
sediment
tiny pieces of rock and soil that settle in layers
geological time
the very, very long time the earth has existed
isotope
a special version of an element that helps scientists tell where something came from
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