Solar energy
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More about:
Biomass is material of plants and animals that can be used for energy.
Geothermal energy uses heat energy from beneath the surface of the earth.
Fast-flowing water released from dams in mountainous areas can turn water turbines to produce electricity.
Electricity can be obtained by the flow of water through turbines in a dam as the tide rises and falls.
Moving air turns the blades of windmills or generators to make electricity or to pump water out of the ground.
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