which lists the three elements that geologists measure to determine the age of an organism’s remains?
argon, nitrogen, and carbon-12
carbon-14, nitrogen, and carbon-12
nitrogen, potassium, and carbon-14
carbon-12, potassium, and argon
Answers
Answer:
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Answer: Absolute dating methods provide chronological estimates of the age of certain geological materials associated with fossils and even direct age measurements of the fossil material itself. To establish the age of a rock or a fossil, researchers use some type of clock to determine the date it was formed. Geologists commonly use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon, as reliable clocks to date ancient events. Geologists also use other methods - such as electron spin resonance and thermoluminescence, which assess the effects of radioactivity on the accumulation of electrons in imperfections, or "traps," in the crystal structure of a mineral - to determine the age of the rocks or fossils. All elements contain protons and neutrons, located in the atomic nucleus, and electrons that orbit around the nucleus (Figure 5a). In each element, the number of protons is constant while the number of neutrons and electrons can vary. Atoms of the same element but with the different number of neutrons are called isotopes of that element. Each isotope is identified by its atomic mass, which is the number of protons plus neutrons. For example, the element carbon has six protons but can have six, seven, or eight neutrons. Thus, carbon has three isotopes: carbon 12 (12C), carbon 13 (13C), and carbon 14 (14C)
=> Carbon dating method or carbon 14 dating process is used to find the age of fossils or dead remains of organisms.