Where does all energy for most organisms on earth come from?
a. oxygen
b. carbon dioxide
c. water
d. sunlight?

Structures in cells that carry out specific functions.

Which part of cellular respiration must occur before any of the other steps can occur

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