I believe it would be to calculate the amount of C-14 atoms left. scientists began to find out how long an object has been decaying, this has to do with half lifes etc. and how long a specific mineral/elements half life is. they use this to calculate how old it is (not an exact age but it's very accurate.)
The answer is c. heliotropism. Hope this helps.
Answer:
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Explanation:
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It is relative dating because no scientist can tell the actually time that the layers of rocks where formed or when the fossil began to degrade