World Population. Population Growth World’s population now 7 billion Doubled between 1800-1950 Growing rapidly because birth rate exceeding death rate.

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Presentation transcript:

World Population

Population Growth World’s population now 7 billion Doubled between Growing rapidly because birth rate exceeding death rate Wealthy industrialized countries have zero population growth Culture plays part in high birthrates in some countries

Challenges of Population Growth Food production has increased (except Africa) Rapid pop. Growth is straining resources Pop is distributed unequally by age Science is addressing issue of growth (new food production)

Population Distribution Most live on 1/3 of Earth’s land Europe & Asia (60%) most densely populated continents Many people live in metropolitan areas Total pop / total land area = pop density Varies greatly by country Does not account for unevenness in a country

Population Movement People are migrating many from village to cities Results in urbanization Many villagers seek jobs, better life Half worlds pop live in cities Occurs between countries, emigrant (someone leaving), immigrant (someone arriving)