exam 3 study guide

exam 3 study guide - Exam III Review Alpine Ecology Info...

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Exam III Review Alpine Ecology Info Meeting Tuesday Apr 1 4pm in 320A EESAT
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Chapters To Be Covered Chapter 14: All Chapter 15: All Chapter 16: All 50 questions—multiple choice
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Chap 14--History Events Love Canal, James River People Paracelsus, Ellenbog, Socrates, Percival Pott, etc Toxicants Mercury, DDT, Benzene, TCDD, Ethylene Glycol, etc
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Chapter 14-Environmental Health Toxin vs. Toxicant? Physical hazards (floods, blizzards, landslides, radon, UV exposure) Chemical hazards (disinfectants, pesticides) Biological hazards (viruses, bacterial infections)
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Types of Toxicants Carcinogens : cause cancer Mutagens: cause mutations in DNA Teratogens: cause birth defects Endocrine disruptors: interfere with hormones
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Global Transport
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Some chemicals are more stable than others, persisting for longer in the environment. DDT and PCBs are persistent. Bt toxin in GM crops is not persistent. Temperature, moisture, sun exposure, etc., affect rate of degradation. Most toxicants degrade into simpler
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exam 3 study guide - Exam III Review Alpine Ecology Info...

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