The answer is D.the absolute age of a fossil. Hope this helps:)
That depends on what you mean by ripples at the beginning of time. If you are referring to inflation of the universe caused by the Big Bang, and the subsequent "ripples", then those ripples are the leftover, background radiation from the event. If you are referring to ripples in space-time, then it still could have multiple meanings.
Mitosis is the type of cell division the question is asking for