IGCSE Development Studies: Specimen Questions with Answers 31 - 32 of 98

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High Death Rate

Question 31 (3 of 7 Based on Passage)

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What is birth rate minus death rate?

Explanation

Birth rate minus death rate is the rate of natural increase. The rate of natural increase in population is the difference between the number of live births and the number of deaths occurring in a year, divided by the mid-year population of that year multiplied by a factor.

  • Rate of natural increase is equal to the difference between the crude birth rate and crude death rate which measures the effect of migration on change in population. Rate of natural increase is calculated in percentage form.
  • Example, if birth rate is 15 per 1,000 population and the mortality rate is 5 per 1,000 population, then the natural increase in population will be calculated by,

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Question 32 (4 of 7 Based on Passage)

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How birth rate and death rate are related to population?

Explanation

The natural increase of population rate is mainly depending on the birth rate and death rate. Birth rate refers to the number of live babies born in a year for every 1000 people in the total population. Births occur to young-adult age people. If in a country there are more young-adult in comparison to the old adult, then there will be more births in a country leading to increase in population of the country.

On the other hand, if in a country older-adults are in large number then the country will have high mortality rates. Thus, we can say that, many people who are having one or two children can still produce many births in a country. This is referred to as population momentum. The momentum of population can be lowered in a less developed country when the large number of young-adults pass the age of fertility.