Australopithecines began roaming the african savanna about million years ago. a. 8 b. 2 c. 1 d. 4

What is point source pollution of an aquatic ecosystem? a) pollution of freshwater sources b) pollution from many sources that combine into one c) pollution that occurs over a wide area; water that runs off from fields, parking lots, and other land surfaces d) pollution that can easily be identified with a single discharge source, such as an open pipe which drains into a body of water

Analyze how the four requirements for life were identified by scientists

Because water is a polar molecule it makes an excellent solvent for atoms and compounds found within cell and tissue. water acting as a solvent in organisms, aids in all of the following except