Class 10 Population and Migration Exercise 13.1 Solutions | English Curriculum Development Centre

What was the size of the world population in the mid-twentieth century?

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Solution

The size of the world population in the mid-twentieth century was 5 billion.

Question b)

What was the fastest population growth rate in the past century?

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Solution

The fastest population growth rate in the past century was 2.1 percent per year between 1962 and 1965.

Question c)

Why has the population growth rate declined in the recent years?

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Solution

The population growth rate has declined in recent years because of reduced levels of fertility.

Question d)

What is the predicted world population size by 2050?

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Solution

The predicted world population by 2050 is 9.7 billion.

Question e)

How do fertility and mortality contribute to the size of the population?

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Solution

Fertility rates directly impact population size, with higher fertility leading to population growth and lower fertility leading to a decline. Conversely, mortality rates have an inverse relationship with population size; higher mortality rates decrease population size, while lower mortality rates increase it

Question f)

Which countries contribute to the largest population in Eastern and South-Eastern Asia?

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Solution

China and India contribute to the largest population in Eastern and South-Eastern Asia.

Question g)

Why will population regions have a different population variation in the next 30 years?

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Solution

Population regions will have a different population variation in the next 30 years because of the different population growth rates in different regions.

Question h)

Which countries are most likely to contribute to the growth of world population by 2050?