Population Explosion Your Subtitle Goes Here. 4 BASIC NEEDS AIR FOOD WATER SHELTER.

Population ExplosionYour 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• More people means more carbon

dioxide=less oxygen

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• 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• 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

• SEX—OBVIOUSLY—cultural factors--like male dominated societies and demand for Boy babies

CAUSES…• MEDICAL TECHNOLOGY—

Spending billions to cure diseases but setting up planet earth for a serious population problem

CAUSES…• RELIGION—many religions

actively oppose birth control “every child is a gift of God”

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

CAUSES…• Lack of family planning in poor

nations—either not available or not well delivered