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World Population

World Population. Population Growth Population Distribution Population Movement. Which three continents will hold roughly the same number of people in 2050?. Population Growth. The world’s population has increased in the past two centuries.

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World Population

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  1. World Population Population Growth Population Distribution Population Movement

  2. Which three continents will hold roughly the same number of people in 2050?

  3. Population Growth • The world’s population has increased in the past two centuries. • 1800 1 billion people • Today more than 6 billion people • What is the reason for this growth in the population?

  4. What are the reasons for population growth? • The death rate has gone down and the birthrate has increased. • The death rate is the number of deaths per year for every 1,000 people. • The birthrate is the number of children born each year for every 1,000 people.

  5. Reasons why the population is growing • Better health care • Better living conditions • More plentiful food supplies because of advances in technologies.

  6. Challenges of Population Growth • When the population density of a place increases warfare and crop failures can lead to famine. • When population density increases countries may also face shortages of water and housing. • When population density increases people may face shortages of clean water • Increased population density requires more medical facilities, schools and other government agencies

  7. What is population density? • Population density is the average number of people living in a square mile or square kilometer. • Total population / land area in square miles (or square kilometers) • For example: Canada’s population of 33 million, divided by the land area of 3,559,294 square miles • 33,000,000/3,559,294 = a density of 9.27 people per square mile.

  8. World Population Density Map

  9. The Earth’s population is not evenly distributed • Why do people live on only a small part of the Earth? • Land only covers about 30 percent of the Earth’s surface. • Only half of this land is usable by humans. • There are landforms that cannot support large numbers of people like deserts, high mountains, and ice-covered lands.

  10. Why is the population density not evenly spread out? People prefer to live in places that have: • Fertile soil to grow crops • Mild climates • Natural resources and water resources

  11. Two-thirds of the world’s people live in these five regions. • East Asia • South Asia • Southeast Asia • Europe • Eastern North America

  12. Where do most people live and why? • Most people live in cities rather than in rural areas. Why? Jobs and resources are found in cities

  13. Population Movement • Large numbers of people migrate from one place to another

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