Biomagnification

Biomagnification Food web magnification Steady increase in the concentration of harmful substances as the trophic level increases. Lower trophic levels have smaller concentrations of contaminants than higher levels.

Toxic Chemicals

Biomagnification of DDT Video

Endangered Species Organisms threatened with extinction Once extinct, the species is gone forever!! Caused by hunting, disease, pollution, habitat destruction

Endangered Species EX: Ivory-billed woodpecker Endangered Species List

Ten Animals that May Go Extinct Video