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Water Issues

Water Issues. The Hydrologic Cycle. Water Pollution. Over 60 chemicals have identified in the Great Lakes. Theses are known chemicals – who knows what other nasty substances are beneath the surface. Theses chemicals are highly toxic and can cause harm to living creatures. Categories

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Water Issues

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  1. Water Issues

  2. The Hydrologic Cycle

  3. Water Pollution Over 60 chemicals have identified in the Great Lakes. Theses are known chemicals – who knows what other nasty substances are beneath the surface. Theses chemicals are highly toxic and can cause harm to living creatures. Categories • Toxin – Poisonous substance • Carcinogen – causes cancer • Mutagen – Causes birth defects

  4. Water Pollution con’t Some of the chemicals identified are: • PCBs (polychlorinated biphenyl) • produced in electrical transformers • linked to birth defects and cancer • Dioxin • Produced as waste in industrial and chemical processing • Most deadly substance known to humans • Linked to cancer • Chlorine • Compound common to most toxins • Linked to cancer

  5. Biomagnification • Def – how toxins move up the food chain; concentration increases at each trophic level of the food chain

  6. Walkerton

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