Population Geography CHAPTER 4 – SECTION 2. Population Growth 1850: 1 billion 1930: 2 billion 1975: 4 billion 1999: 6 billion 2050: 9 billion.

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Presentation transcript:

Population Geography CHAPTER 4 – SECTION 2

Population Growth 1850: 1 billion 1930: 2 billion 1975: 4 billion 1999: 6 billion 2050: 9 billion

Birth and Death Rates BIRTHRATE: The number of births per 1,000 people. MORTALITY RATE: The number of deaths per 1,000 people. INFANT MORTALITY RATE: Number of deaths among infants under 1 years old, per 1,000 births.

Population Distribution About 90% of people live in N. hemisphere. Almost 2/3 live between 20˚N-60˚N. Populations centered on coastal regions and river valleys.

Migration PUSH FACTORSPULL FACTORS

Population Pyramid

Population Breakdown Joshua – 2000 Census 85 years and over32 75 to 84 years to 74 years to 64 years to 59 years to 54 years to 44 years to 34 years to 24 years to 19 years to 14 years361 5 to 9 years353 Under 5 years374