How did the cooling of the earth influence the presence of liquid water on its surface

Which taxon group is more specific, in regards to organisms that are in that group? mammalia animalia

Elephants in the savanna regions of africa dig holes in dried up river beds to reach water lying just below the surface. these holes provide drinking water for other animals as well. so, without the elephants, many animals might otherwise die from lack of water during the dry season. the location in which the elephants live is an example of a/n and the role they play in creating water holes is an example of a a) ecosystem; habitat b) community; niche c) habitat; niche d) niche; habitat

What is the approximate time of death of the body temperature is 29.4 degrees celsius