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Population Growth Rate
Complete these exercises with information from Chart 1.
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Chart 1. Total World Population by Country Income Group, 1980, 1998, 2015
1. Study Chart 1 which shows the world population size by country income group for 1980, 1998, and 2015. What is the total world population for each year? How much will total world population have increased from 1998 to 2015?
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2. Use the data in the table below to complete the exercises that follow.
   
Economies
1998 (millions)
2015 (millions)
Low-income economies

3536

4436

Middle-income economies

1474

1748

High-income economies

886

928

Total world population

5897

7113

  a. Calculate the percentage of the world population that lived in low-, middle-, and high-income countries in 1998.
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  b. Describe the general distribution of the world's population among low-, middle-, and high-income countries.
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  c. Calculate the percentage of the world's population that is projected to live in low-, middle-, and high-income countries in 2015.
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  d. Compare the percentages for each country income group and describe the change between 1998 and 2015.
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3. Use the Social Data Table to identify the five most populous countries in 1998 along with their populations, their regions, and their income groups, and fill in the following table:
   
Country
Name
1998 population (millions)
Region
Income
group
 
  a. Which two countries had the largest populations?
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  b. Which two countries had the largest populations?
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  c. Which region had the most countries in the top five most populous nations?
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4. Use the Social Data Table to fill in the population information for China and India in the following table. Next, calculate the percentage of the world’s population that is represented by China and India for 1998 and 2015 and add that information on the table. (Divide each country’s population by the world’s population and multiply the figure by 100.) Then answer the questions that follow.
   
Population 1998
% of world population 1998
Aver. Annual Population growth rate 1998-2015
Population 2015
% of world population 2015
China
India
World
a. Compare the population size of these two countries in 1998. How many times larger was China's population than India's? (Divide China's population by India's population.)
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b. Compare the population size of these two countries in 2015. How many times larger is China's population expected to be than India's?
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c. India has a smaller population base than China, yet the gap in their populations is expected to decrease significantly in the next few years. How can you account for this?
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d. Add the projected 2015 populations of the two countries. What percentage of the world's population will they represent?
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e. Given the population size projections of these two countries, in what ways might they play important roles in the world economy? In your answer consider China and India's potential as producers and consumers, and to what extent this potential depends on the development of their human capital and the use of their natural resources.
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5. In 1998, five out of every six people in the world lived in low- and middle-income countries. As this percentage increases, what might be some of the impacts on the global economy? On the environment? On peace and security issues?
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