CONTENU PAYANT
human civilization has strted realizing how harm rhey already caused to the environment' not to menntion the costs involved; and when it comes to take a stand against these environmental problems' the focus shifts to the use of alternative energy sources. have you ever wondererd ehat alternative energy sources are ?
and why are they supposed to help us sustain ?
alternative sources of energy are the ones whish do not cause any undesirable consequences to the environment, are renewable and are free!
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