Answer is 1/4 of the atoms
at 0 years it would be the full amount (X)
at 10 million years you have half: X/2
at 20 million years you have 1/4 because: (X/2)/2 will equal 1/4
Answer:
Organic materials are rich in <u>carbon</u>
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Hope this Helps!
They mostly had resources , and locations in common.
Answer:
Explanation:
Umm can you add an image?
Iran is the correct answer! you got it ;)
