YOUR DO NOT NEED TO WATCH THE EMBEDDED VIDEO TO ANSWER THE QUESTIONS. If you wish to watch it, please do so outside of class time.
3. What happened to the diet of the Glaucous-winged Gull (Larus glaucescens) when sea otters disappeared?
4. What happened to the diet of Bald Eagles when sea otters disappeared?
5. What is a trophic cascade, and is the story of sea otters a good example?
6. View two of the case studies listed below and describe, in detail, how organisms found at the top of the energy pyramid can impact other organisms in the ecosystem. Name the specific organisms in your explanation.
-Arctic Tundra -Midwestern Lake -African Savannah -Venezuelan Lake
Protists are single celled organisms that are larger than bacteria. They are often decomposers in ecosystems. Some are autotrophs and some are heterotrophs.
Common Substances That Biomagnify:
Group search.
1. How is it used by humans?
2. Which organisms/ecosystems are most impacted?
-PCBs polychlorinated biphenyls
-Teflon (PFAS...perfluorooctanesulfonic acid)
-Mercury
-Lead
-Cadmium
-Arsenic
-Chromium
-Nickel
-Oxybenzone
What does an ecologist do?