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| any natural material that is used by humans |
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| a natural resource that can be replaced at the same rate at which the resource is consumed |
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| a resource that forms at a rate that is much slower than the rate at which it is consumed |
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| the process of recovering valuable or useful materials from waste or scrap; the process of reusing some items |
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| a mixture of gaseous hydrocarbons located under the surface of the Earth, often near petroleum deposits; used as fuel |
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| a liquid mixture of complex hydrocarbon compounds; used widely as a fuel source |
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| a nonrenewable energy resource formed from the remains of organisms that lived long ago; examples include oil, coal, and natural gas |
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| a fossil fuel that forms underground from partially decomposed plant material |
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| precipitation, such as rain, sleet, or snow, that contains a high concentration of acids, often because of the pollution of the atmosphere |
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| photochemical haze that forms when sunlight acts on industrial pollutants and burning fuels |
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| the energy released by a fission or fusion reaction; the binding energy of the atomic nucleus |
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| the energy released when a chemical compound reacts to produce new compounds |
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| the energy received by the Earth from the sun in the form of radiation |
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| the use of a windmill to drive an electric generator |
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| electrical energy produced by falling water |
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| organic matter that can be a source of energy |
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| a mixture of gasoline and alcohol that is used as a fuel |
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| the energy produced by heat within the Earth |
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| Organic compound that contains carbon and hydrogen- both petroleum and natural gas are made from these |
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| Rocks that fluids can move through, like petroleum and gas |
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| The process by which soil and rock are stripped from the earths surface to expose underlying coal that is to be mined |
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| A process in which the nuclei of radioactive atoms are split into 2 or more smaller nuclei |
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| The joining of 2 or more nuclei to form a larger nucleus |
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| Large panels made up of many solar cells wired together- they provide electrical energy used in buildings |
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