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Pollutants & Human Health

Pollutants & Human Health. LR 3.1, pg. 79, #1-7. 1. What is effluent, & what risks does it pose to humans & the environment?. effluent = wastewater from factories and refineries that is released directly into urban water supplies

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Pollutants & Human Health

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  1. Pollutants & Human Health LR 3.1, pg. 79, #1-7

  2. 1. What is effluent, & what risks does it pose to humans & the environment? • effluent = wastewater from factories and refineries that is released directly into urban water supplies • Effluent often contains harmful by-products of manufacturing processes. • Effluents can contain sewage.

  3. 2. List 5 water pollutants & the effects each has on human health. • lead = brain damage • iron = changes in skin pigmentation, diabetes, enlargement of the spleen and liver, heart failure, and general weakness, stroke • manganese = mental and emotional disturbances, body movements may become slow and clumsy • hydrogen sulfide = convulsions, trembling, respiratory disturbances • radioactive substances & their decay products = cancers

  4. 3. Describe 4 gases that pollute the air & the effects of each on human health. • ozone = upper & lower respiratory tract illness, eye irritation, coughing, shortness of breath, nausea, wheezing, & headaches • carbon monoxide = headache, fatigue, flu-like symptoms, death • sulfur dioxide = difficulty breathing, respiratory illness, decreased lung functions, aggravation of existing heart disease • nitrogen dioxide = eye irritation, stuffy nose, coughing, sore throat, lung inflammation, respiratory illness.

  5. 4. How do some farming practices pollute the soil? • Agriculture contributes a large percentage of soil pollutants in the form of sediment, pesticides, animal wastes, & fertilizers. irrigating crops in poorly drained areas results in standing water, which eventually evaporates & leaves the soil polluted with salts.

  6. 5. Compare & contrast high-level & low-level radioactive wastes. • HLW = highly radioactive, poses health risks for thousands of years. Fed. govt. • LLW = low radiation levels, decay to a safe level in about 100 yrs. State govt.

  7. 6. What are some of the principles of PA’s environmental policy? • Every person is part of the total ecosystem & should be recognized as a trustee of Earth’s resources. • The dependency of people on air, water, & land resources should be acknowledged for the long-term survival of society. • The complex interrelationships of the natural environment are to be recognized & respected. • Resources are to be managed according to the natural capabilities of the total environment. • Human activities can create adverse impacts on human health & the natural environment & are to be minimized.

  8. 7. Name 5 PA acts or laws & the impact of each on the environment. • Purity of Waters Act (1905) • Safe Drinking Water Act (1974) • Surface Mining Conservation & Reclamation Act (1945) • Project 70 Land Acquisition & Borrowing Act (1964) • PA Solid Waste Management Act (1968) • Solid Waste Management Act (1980) • Building Conservation Energy Act (1980) • etc.

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