To be successful today… Pick up warm-up sheet Pick up graded work (2) Pull out Hoo Eats Who? Lab BYOD Color of the day is Phones are in put away in backpacks

Warm-Up Thurs 4/5 Which organism is both a secondary and tertiary consumer? Where does the energy that drives this ecosystem come from?

To be successful today… **If you need to make-up a test, you must do so by TOMORROW AM** Have Ready:NOTES: Energy in Ecosystems Add to TOC and set up NOTES: Population Ecology STAAR Review in Auditorium TODAY! Population Ecology & Graphing HW due WED 4/12 BYOD Color of the day is Phones are in put away in backpacks

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