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heat from Earth’s center

non polluting free. can’t be placed everywhere. heat from Earth’s center. renewable. non polluting free. not reliable (cloudy, night). Sun (nuclear fusion). perpetual. heat released when atoms split/fused. non polluting air not expensive. waste is radioactive. nonrenewable.

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heat from Earth’s center

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  1. non polluting • free can’t be placed everywhere heat from Earth’s center renewable • non polluting • free not reliable (cloudy, night) Sun (nuclear fusion) perpetual heat released when atoms split/fused • non polluting air • not expensive waste is radioactive nonrenewable not always windy (unreliable) uneven heating of the Earth • non polluting • free perpetual • easily found • free • renewable plant waste burned to release energy pollutes the air as it burned renewable formed from ancient plants • cheap • lots of it in USA pollutes the air as it burned nonrenewable dammed up water is released • non polluting • free water changes ecosystems renewable

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