The survival of all living things

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, womens 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

• Earths surface has risen 1F 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?