Chapter 5 Section 3 Human Population Growth

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Presentation transcript:

Chapter 5 Section 3 Human Population Growth Objectives: -Describe how the size of the human population has changed over time -Explain why population growth rates differ from country to country AZ Science Standard: Analyze social factors that limit the growth of a human population

Historically, like the populations of many other living organisms, the size of human population tends to increase with time

Human Population Industrial Revolution Begins Agriculture Begins Plowing And Irrigation Bubonic Plague

The study of human populations Demography: The study of human populations

Demography Continued: Birthrates, death rates, and the age structure of a population help predict why some countries have high growth rates while other countries grow more slowly

Demographic Transition: Dramatic change in birth and death rates

Reasons for High Birth and Death Rates: Birth Rate is high as a result of: Lack of family planning Need for workers in agriculture Religious beliefs Children as economic assets Death Rate is high because of: High levels of disease Famine Lack of clean water and sanitation Lack of health care War Competition Lack of education

U.S. Population Rwandan Population Males Males Females Females Questions regarding age structure diagram