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the energy released by a fission or fusion reaction; the binding energy of atomic nucleaus
a natural resource that can be replaced at the same rate at which the resource is consumed
a resource that forms at a rate that is much slower than the rate at which consumed
a nonrenewable energy resource formed from the remains of organisms that lived long ago (oil, coal)
a mixture of gaseous hydrocarbons located under the surface of the Earth, often near petroleum deposits
precipitation that contains a high concentration of acids, often because of the pollution of atmosphere
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