Answer:
the question is not finished amigo
2 kjdnkjanbbbbbbbbbbbbbbbbbbbExplanation:
The only answer that could be considered an advantage is C. Increasing the amount of crops harvested.
For the first question, the age of each strip of rock is needed to determine the rate of seafloor spreading. The answer is B.
For the second question, the answer is A.
Because people are always growing and being born.
