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The survival of all living things

The survival of all living things. Depends on the health & integrity of the earth: environmental health. Environmental Health: Considerations. Overpopulation Pollution Air Water Land Global warming. Overpopulation: Capacity. Food Water Air Shelter Natural resources Ecosysystems

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The survival of all living things

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  1. The survival of all living things Depends on the health & integrity of the earth: environmental health

  2. Environmental Health: Considerations • Overpopulation • Pollution • Air • Water • Land • Global warming

  3. Overpopulation: Capacity • Food • Water • Air • Shelter • Natural resources • Ecosysystems • Forests, tropical rain forests, deserts, ocean, tundra • Quality of life

  4. World Population Growth, 1950-2050 (Projected)

  5. Overpopulation • United Nations projects world population to increase from 6.4 billion to 9.4 billion by 2050 and to 11.5 billion by 2150 • Population increase is expected to occur mostly in poor countries • Overpopulation threats are most evident in Latin America, Africa, and parts of Asia • India is projected to have the largest increase in population and surpass China as the most populous country • The United States consumes far more energy and raw materials per person than any other nation on earth

  6. A Solution to Overpopulation Zero Population Growth: two offspring per couple

  7. Zero Population Growth: Challenges • U.S only major industrialized nation to continue significant population growth • Religious beliefs, individual rights, government tax programs, values • Preference for large families in developing countries • High infant mortality rates, children viewed as future caretakers of parents, women’s lack of control over reproductive choices, traditional desire for sons • Education is the biggest contributor to zero population growth

  8. Air Pollution: Sources • Sulfur dioxide • Particulates • Carbon monoxide • Ozone • Nitrogen dioxide • Lead • Hydrocarbons

  9. Air Pollution: Solutions • Develop national strategies to address air pollution • Support policies that encourage the use of renewable resources • Develop & utilize alternative methods of transportation are needed to reduce air pollution significantly

  10. Water Pollution

  11. Land Pollution

  12. Global Warming • Earth’s surface has risen 1°F in the past century, with an accelerated increase over the last two decades • Greenhouse gases – carbon dioxide, CFCs, ground-level ozone, nitrous oxide, and methane: form a gaseous layer that allows solar to heat to pass through to earth, but traps the heat as it tries to escape

  13. Global Warming: Considerations • How has the spreading of human habitat in the United States impacted plants and animals? • Do you think world leaders are concerned about the effects of global warming? • What can we, as individuals, do?

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