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Population Explosion. Your Subtitle Goes Here. 4 BASIC NEEDS. AIR FOOD WATER SHELTER. AIR. Clean air is a scarce commodity Human activity means pollution in the air More pollution=more human activity=less oxygen Fossil fuels add 5.5 billion tons of carbon to the atmosphere yearly

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population explosion

Population Explosion

Your Subtitle Goes Here

4 basic needs
4 BASIC NEEDS
  • AIR
  • FOOD
  • WATER
  • SHELTER
slide3
AIR
  • Clean air is a scarce commodity
  • Human activity means pollution in the air
  • More pollution=more human activity=less oxygen
  • Fossil fuels add 5.5 billion tons of carbon to the atmosphere yearly
  • More people means more carbon dioxide=less oxygen
slide4
FOOD
  • The human body requires a certain amount of calories to survive—fortunately our capacity to produce food has matched our capacity to produce kids
  • As population goes up—demand goes up—capacity goes down
  • By the 1980’s 11 major oceanic fisheries had been depleted to the point of collapse
  • By 2008 an additional 30 nations will be unable to feed themselves
water
WATER
  • All living things require water for survival
  • More people=more demand for water=less water
  • 4 of every 5 people lack access to fresh water
  • As people increase, waste increases which is usually dumped into the water
shelter
SHELTER
  • Building shelters requires materials
  • As mans numbers increase, the availability of resources decrease
  • Since World War II an area the size of China and India has been so damaged by human activity that it has lost most of its biological activity
  • 1/3 of the earth’s surface (land) on which nearly 1/5 of humanity lives is threatened by desertification
causes of overpopulation
CAUSES OF OVERPOPULATION
  • SEX—OBVIOUSLY—cultural factors--like male dominated societies and demand for Boy babies
causes
CAUSES…
  • MEDICAL TECHNOLOGY—Spending billions to cure diseases but setting up planet earth for a serious population problem
causes1
CAUSES…
  • RELIGION—many religions actively oppose birth control “every child is a gift of God”
causes2
CAUSES…
  • ECONOMICS—most poor countries have no welfare system, no social security, etc... By having many children they get a “living” retirement system. Labor intensive farming—breed your own workforce
causes3
CAUSES…
  • Lack of family planning in poor nations—either not available or not well delivered