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The top documents tagged [doesnt cause air pollution]
Hydro-power By: Shaun, Kaitlyn, and Allison. Hydro History The earliest form of hydropower is from over 2000 years ago when the Greeks used water wheels
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Who is dying? Mother Earth is dying.. How do we help Mother Earth? We can plant more trees. We can recycle. We can ride a bike
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Hydro-power
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Hydro-power
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