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- Fossil Fuels 5th Grade Children's Earth Sciences Book
Fossil Fuels 5th Grade Children's Earth Sciences Book
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Fossil fuels are a low cost and versatile energy source. But they are becoming less plentiful. In fact, we are on the verge of peak demand. The United States produces most of its energy from fossil fuels. However, as the world becomes more efficient, these sources are being squeezed.
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