</span>In psychology, regression is the return to modes of thought and conduct that do not correspond to the age or psychic maturity of the individual, it means the behavior that is usual in a given situation gives way to behavior that is characteristic of a previous stage of development or corresponds to a repertoire of activities acquired in the past of the individual (like thumb sucking for Jared, he use to do that when he was a baby), but gradually replaced by more adapted activities. It may be temporary or lasting.
I think the Ocean has more Carbon dioxide because the atmosphere has a lot of layers. People have died while climbing the Mount Everest cause of how high they go into the atmosphere the less air there is.