How would you respond to someone who made the following statement? The greenhouse gas theory that certain gasses (such as water vapor and carbon dioxide) trap heat in the atmosphere and thus influence the average temperature and climate of the earth is not a reliable idea because it is only a scientific theory.

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