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Fossil fuels are carbon-based energy sources like coal, oil and natural gas created from decayed plants and sea creatures that accumulated in the oceans. A biofuel is any fuel that's made from plant materials
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5x-2=8 add 2 to both sides 5x=10 divide both sides by 5 x=2
Ancient Athenians developed the a form of democracy known as "Direct Democracy". Direct democracy is known as the first form of democracy.
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Climate Change Some of the biggest human migrations coincided with major changes in climate, according to a new analysis. Researchers say early humans set out in search of climates where more food was available. And some populations stayed put in certain locations because barriers like glaciers blocked their progress
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