Which kind of investigations are meant to provide large amounts of information about a wide range of variables

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

Describe how a student should adjust the microscope to see the cells on a slide more clearly?

Hybrid instruments that play sounds that are part sampled and part synthesized are known as: