Suppose you were analyzing the bodies of two ancient humans who were known to have lived at the same time. You find that
one of the bodies has a slightly greater amount of carbon-14
still remaining in it than the other.

sorry to break it to ya but no one can answer your question it's just

jk but i am serious about the part that most people cant answer it beacuse you did not mention the section you are talking about. but it would if you added some detail and were a bit more specific.

well first you need the sample of the temperature and gas level. i couldnt write a hypothesis unless i had some data. i think temperature changes will effect volumes of gas because gas changed into a solid or liquid at specific temperatures.