Human_Population

Human_Population - Factors that affect human population...

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Factors that affect human population include: Historical population sizes Population distribution Fertility rates Growth rates Doubling times Demographic transition
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Rapid growth rate of world’s population over past 100 years is due to decrease in death rates resulting from: Increased food and more efficient distribution Improvements in medical technology Improvements in sanitation and personal hygiene Safer water supplies
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First: Use of tools and fire Second: Agricultural revolution humans stopped being hunter/ gatherers and began raising crops Third: Industrial and medical revolutions within the last 200 years
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Population change = (crude birth rate + immigration) – (crude death rate + emigration) Current world growth rate of 1.3% to population of 6 billion yields 85 million people annually.
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In 1800, majority of world population lived in Asia (65%) and Europe By 1900, 25% lived in Europe largely due to Industrial Revolution
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Human_Population - Factors that affect human population...

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