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What is a nonrenewable energy resource?

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An energy resource that takes millions of years to form from the remains of plants and animals, such as coal, oil, and natural gas.

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What is coal?

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A hard, black, solid fuel formed from the remains of plants over millions of years and extracted from the ground.

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What is geothermal energy?

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Heat harnessed from deep beneath Earth's surface and converted to usable energy.

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What are greenhouse gases?

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Gases in the atmosphere that absorb and retain heat energy. High amounts cause air pollution and contribute to global warming.

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What is conservation?

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Efforts to wisely use, distribute, and protect valuable resources such as fresh water, soil, and unique environments.

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What is renewable energy?

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Energy that can be replenished naturally in a short period of time, such as solar, wind, and hydroelectric energy.

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What is biomass?

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Organic material that comes from plants and animals, which can be used as a renewable energy source.

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What is solar energy?

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Energy harnessed from the sun's rays, which can be converted into electricity or heat.

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What is wind energy?

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Energy generated from the movement of air, which can be converted into electricity using wind turbines.

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What is petroleum?

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A liquid fossil fuel formed from the remains of ancient marine organisms, used for fuel and as a raw material in various products.