Monday, January 16, 2012

Alternative Energy Sources


Hydro energy involves water. It's a good alternative energy source because the water cycle makes it renewable, and it is easy to maintain. The dam can be opened at any time, which gives you power on demand as well as a reservoir of water. A dam can also be a tourist attraction. Drawbacks include pollution (from constructing the dam) and the depletion of salmon and other fish.

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