Fossil Fuel
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An energy source made of the remains of organisms that lived long ago, like coal or oil
Real World Example
Imagine trying to find a favorite old song on a dusty cassette tape you forgot you even had. Just like how that cassette tape holds music recorded long ago, fossil fuels are energy sources made from the remains of organisms that lived millions of years ago. In both cases, something from the past—whether it's your old song or ancient plants and animals—provides us with useful energy or entertainment today when we tap into it.
Practice Version
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