Choose two chemical contaminants that could be found in a freshwater source. For each one,

the generally accepted parts of modern cell theory include: all known living things are made up of one or more cells. all living cells arise from pre-existing cells by division. the cell is the fundamental unit of structure and function in all living organisms.

several tissues working together form an organ, and several organs together make up an organisms.

the group of cell that carries out special jobs are tissue.