POPULATION POPULATION GEOGRAPHYGEOGRAPHY

Tokyo-How would you be Tokyo-How would you be different? metro=35 milliondifferent? metro=35 million

Mumbai, India-20 million-Mumbai, India-20 million-60,000 per sq mile60,000 per sq mile

St ThomasSt Thomas

WORLDWIDE POPULATIONWORLDWIDE POPULATIONGROWTHGROWTH

80 Million a year 220,000 per day80 Million a year 220,000 per day

WHY? WELL….WHY? WELL….

More food More food growngrown

Better food Better food growngrown

Better Better sanitationsanitation

Modern Modern medicinemedicine

CALCULATING POPULATIONCALCULATING POPULATIONGROWTHGROWTH

Birth Rate – Death Rate = growth Birth Rate – Death Rate = growth raterate

POPULATION PYRAMIDSPOPULATION PYRAMIDS

Shows age/sex distribution of a Shows age/sex distribution of a populationpopulation

WHY SHOULD I CARE?WHY SHOULD I CARE?

YOUR FUTURE IS AT STAKEYOUR FUTURE IS AT STAKE

OVERPOPULATION!!OVERPOPULATION!!

12 BILLION BY 205012 BILLION BY 2050

YOUR TURNYOUR TURN

What are some problems What are some problems that would arise from that would arise from having more people on having more people on earth?earth?

POPULATION DENSITY, POPULATION DENSITY, DISTRIBUTION, & DISTRIBUTION, &

MOVEMENTMOVEMENT

II. POPULATION II. POPULATION DISTRIBUTIONDISTRIBUTION

A. Spread unevenly A. Spread unevenly 1.90% In Northern Hemisphere 1.90% In Northern Hemisphere

2.75% in Asia 2.75% in Asia B. Areas favorable to settlementB. Areas favorable to settlement 1. people seek mild climates, fertile soil, fresh water, 1. people seek mild climates, fertile soil, fresh water, edges of continentsedges of continents

POPULATION POPULATION DENSITYDENSITY

Subway in Taiwan

III. POPULATION DENSITYIII. POPULATION DENSITYA. It’s the # of people living per square A. It’s the # of people living per square

mile - mile - Canada=8 NYC=55,423Canada=8 NYC=55,423

B. People crowd into areas favorable to B. People crowd into areas favorable to settlementsettlement

CARRYING CAPACITYCARRYING CAPACITY

# of living things a piece of land # of living things a piece of land can supportcan support

DETERMINING FACTORSDETERMINING FACTORSFertility of landFertility of landFarming technologyFarming technologyAccess to fresh waterAccess to fresh water

EXCEEDING CARRYING EXCEEDING CARRYING CAPACITYCAPACITY

“If humans can't control the explosive population growth in the coming century, disease and starvation will do it.” (Ecology Dept.,

Cornell University)

EXCEEDING CARRYING CAPACITY EXCEEDING CARRYING CAPACITY -FUTURE PROBLEMS-FUTURE PROBLEMS

Competition for fresh water (war)Competition for fresh water (war)Loss of farmland (less food)Loss of farmland (less food)Depletion of fossil fuels (no energy)Depletion of fossil fuels (no energy)Mass migrationMass migration