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NEET 2004 Biology question

BiologyEvolutionNEET 2004

Age of fossils in the past was generally determined by radio-carbon method and other methods involving radioactive elements found in the rocks. More precise methods, which were used recently and led to the revision of the evolutionary periods for different groups of organisms includes -

Answer: (2)

Solution

Besides radiocarbon and radioactive-element dating, newer and more precise techniques such as electron spin resonance (ESR) dating (which measures trapped unpaired electrons produced by natural radiation in tooth enamel, shells and other minerals) and

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Question ID VK-089444