What does a photovoltaic cell do?
converts electricity into heat for pools
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Alexander calder's mobiles are an example of motion because it uses forces of wind and water.
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When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change? work power gravitational energy chemical energy
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How do you tell if someone actually cares about you? and just say they do?
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Explain why you think this diagram shows what happened to the carbon in the biodome.
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