it is found that a particular type of cell isolated and growing in culture secretes a much larger amount of protein than human liver cells grown under the same conditions. from this, you hypothesize that these cells must have a large number or amount of

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