National Geographic Troubled Waters
Eastern Wyoming Marsh, Hayes, researcher and investigator:
1. What did Hayes discover about the N. Leopard frog?
2. What are his suspicions?
3. What is Atrazine and how does it move into the frog’s territory?
4. How does it affect the frogs’ reproductive system (give the hormonal anomaly)?
5. What is the conclusion of Hayes’ experiment?
6. Is a bigger dose always worse? Why or why not?
St. Lawrence Marine Park, Canada:
7. Is remoteness a guarantee of purity?
8. What has happened to the beluga whales?
9. How are the whales’ immune cells affected by the chemicals?
10. What is meant by a chemical cocktail?
Columbia, Mo. U.S.A. Shanna Swan, Epidemiologist
11. What is the evidence of chemicals on humans?
Women:
Men:
12. Explain her detective story.
13. Besides the low semen quality, what do all of these men share?
Solutions: Lake Harwell, Georgia, Geneticist, Richard Meagher
14. Discuss the mercury contamination in the pond.
15. Which form of mercury it the most toxic?
16. How can we use plants to deal with heavy metals?
17. Bacteria can handle doses of methyl mercury. So how did Meagher use bacteria and plants to extract methyl mercury
from the water?
Queensland, Australia, Vince Vitale, Sugar Cane Farmer:
18. Many “cides”, nitrogen fertilizer and animal manure wash into the river that empties into the sea. This is suspected for
the cause of an outbreak of _________________________________________
that destroys corals of the Great Barrier Reef.
19. Explain the nitrogen theory.
20. In 1880 what was the protective barrier that prevented the runoff from flowing to the sea?
21. What did a farmer like Vitale do to help restore the Great Barrier Reef?
Eastern Pacific Ocean, Teraney Thys, Ocean biologist
22. Where are the open ocean animals getting exposed to toxins?
23. What are people doing to help these open ocean animals?
24. What is the toxic burden for the next generation, you!?
25. What ways are well all connected as far as the information in this video?
Extension: Define the following terms and find examples from the video, Troubled Waters.
1. Bioindicators
2. Bioaccumulation
3. Biomagnification
4. Bioremediation