To which two organ systems does the pharynx belong?

Which of the following terms describe a liquid molecule that has only single bonds between its carbon atoms

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

If animal agriculture was eliminated, how much grain would become available for human consumption?