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Bio fuels are also in use. Bio fuels where maid from the waste of animals such as pigs and chickens. It is treated, and use as a source of energy.

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The sight of a dam – one of the largest and most complex structures that humanity has ever created – can be quite breath-taking. Take a look at some of the most spectacular of these structures.

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Should we use Hydro Electricity as our source of power from 2010 and onwards?

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Beaver dams create many benefits for us and the environment.