Can be used to date fossils in rocks to give an approximate age. a. isotope b. half-life c. radiocarbon dating d. direct dating

C. Radiocarbon dating

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C. Radiocarbon dating

Explanation:

     After a living being dies, the C-14 in its body tends to become a nitrogen atom again. But this process is quite slow. It was then that the scientist Wilard Libby came up with the idea of measuring the amount of radiation emitted by the C-14 of some object. Through this we can know exactly how long that being has stopped breathing. The method is extremely effective in historical dating.

     The radiation measurement is made by an instrument called Geiger-Müller Counter. With this extremely sensitive device, it is possible to measure the radiation of the atmosphere. Thus, by isolating the archaeological artifact whose historical period we want to discover, it is possible to measure only the radiation of carbon-14.

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question

which are human systems?

the amazon rain forest

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the george washington bridge

the himalayas

the hoover dam

the north american free trade agreement