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| _______ a nonrenewable energy resource that began to form millions of years ago from remains of once-living plants and animals. |
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| ______ is the introduction of harmful waste products, chemicals, and substances, into the environment. |
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| ______ is acidic rain or snow produced when gases released by burning oil and coal mix with water in the air, it causes damage and can kill plants and trees. |
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| ______ are resources, such as fossil fuels, that cannot be replaced by natural processes in less than 100 years. |
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| ______ is the ability to change things, such as the temperature, speed, or direction of an object. |
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| ______ is soft, brown coal formed by heat and pressure interacting with decayed material. |
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| ______ is energy resources, such a s wind and water, that can be recycled ior replaced by natural processes in less than 100 years. |
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| ______ is energy from the sun that is nonpolluting, renewable, and abundant but is available only when the sun is shining. |
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| ______ is the porduction of electricity by water. |
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| ______ is heat energy from Earth, which can be used to generate electricity. |
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| ______ is energy produced by splitting the nuclei of certain elements. |
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| ______ is water that soaks into the ground and collects in the small spaces between bits of rock and soil. |
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| _______ is a single, identifiable pollution source. |
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| ______ is pollution that comes from many different sources, such as industries, homes, and farms. |
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| ______ is mineral or rock that contains a useful substance that can be mined at a profit. |
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| ______ is the careful use of resources with the goal of reducing damage to the environment. |
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