In the carbon cycle animation, you learned that, globally, the return of carbon dioxide to the atmosphere through cellular respiration closely balances its removal from the atmosphere through photosynthesis. does this mean that atmospheric carbon dioxide levels are stable?

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