'Estimated human population growth' presentation slideshows

Chapter 7: Human Populations

Chapter 7: Human Populations. 7.1 Population Growth. Human populations grew slowly until relatively recently. Population Growth. Until the Middle Ages, human populations were held in check by diseases, famines and wars, and thus grew very slowly.

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POPULATION GROWTH

POPULATION GROWTH. For most of human history, humans have not been very numerous compared to other species. It took all of human history to reach 1 billion. 150 years to reach 3 billion. 12 years to go from 5 to 6 billion. Human population tripled during the twentieth century.

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POPULATION GROWTH

POPULATION GROWTH. For most of human history, humans have not been very numerous compared to other species. It took all of human history to reach 1 billion. 150 years to reach 3 billion. 12 years to go from 5 to 6 billion. Human population tripled during the twentieth century.

708 views • 60 slides

Population and Malthus

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