Renewable and Nonrenewable Resources

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Renewable

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Able to be replenished naturally within a relatively short period of time.

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Sustainable

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Able to be maintained at a certain rate or level.

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Solar Energy

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Energy derived from the sun's radiation.

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Wind Energy

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Energy obtained from harnessing the power of the wind.

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Hydropower

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Energy derived from the power of moving water.

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Geothermal Energy

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Energy derived from the Earth's internal heat.

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Biomass Energy

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Energy derived from organic matter, such as wood or crops.

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Replenish

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To fill something that has been emptied or used up.

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Conservation

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The act of preserving or protecting natural resources.

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Photosynthesis

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The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.