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Crude oil
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Petroleum as it comes out of the ground & before it has been refined or processed into useful products
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Nonrenewable source
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A resource that takes so long to form that it can't be replaced, oil is an example of this
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Renewable source
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A resource that can't be used up or that can be replaced quickly as it's used up
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Oil reserves
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Oil that has been discovered but remains unused in the ground
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How does oil form?
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Dead plants and animals that were in the ocean fall to the ocean form, most of the bodies turn into rock, the weight of the water, the heat of the earth's core, and chemical changes turned these bodies into oil and natural gas
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Why is there so much oil beneath southwest asia?
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Because long ago it used to be buried underwater
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