Which pair of elements can be used to determine the age of a fossil that is over one billion years old? lead, which is radioactive, and uranium, which is stable carbon, which is radioactive, and nitrogen, which is stable argon, which is radioactive, and lead, which is stable potassium, which is radioactive, and argon, which is stable
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Which pair of elements can be used to determine the age of a fossil that is over one billion years o...
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