Acell divides to produce two daughter cells that are genetically different.

How are mutations continually being generated in a population (what are some of the causes of mutatuions? ) explain

With the word calcite wich completes the analogy mineral, erosion, marble, or aragonite

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