Which is NOT a part of cell theory? A. The basic unit of life is a cell.
B. All cells are produced from other living cells.
C. All cells need light to live.
D. All organisms are made of cell.

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