Biology, 25.11.2021 14:00 keegandudley
the age of fossils can sometimes be determined by radiometric dating, which is based on the constant rate of decay of radioactive isotopes. the time required for half of a radioactive isotope to decay is called the half-life of that isotope. for example, the isotope carbon-14 has a half-life of 5,730 years.
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Biology, 22.06.2019 14:20, gasparesparzajr
What term describes a doctor who becomes a specialist by meeting standards beyond those of getting a license and passing a test in the specialty area?
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