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Question

Age of fossils was previously determined by radioactive elements. A more precise and recent method, which has led to the revision of the evolutionary period is

A
study of carbohydrate and protein in fossils
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B
study of conditions of fossilisation
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C
electron spin resonance and fossil DNA
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D
presence of carbohydrate and protein in rocks
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Solution

The correct option is C electron spin resonance and fossil DNA
In the method of electron spin resonance, the fossilised material is studied under a static magnetic field and microwaves to observe the behavior of the unpaired electrons in it. This gives information about the condition of the sample and its age.

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