1. Biomagnification

2. 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.

3. Toxic Chemicals

4. Biomagnification of DDT Video

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

6. Endangered Species
EX: Ivory-billed woodpecker
Endangered Species List

7. Ten Animals that May Go Extinct Video