353542IN 353542IN

Geography

Answered

Ifa rock had 80 radioactive atoms in it when it was formed and it now has 20 radioactive elements in it, how old is the rock?

Answer :

CIERACAUTHENIN CIERACAUTHENIN

Answer:

100, it is 100 years old

Explanation:

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DONAVANPEREZ13IN DONAVANPEREZ13IN

Answer:

10 million years

Explanation:

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