5. Match each of the letters in Column X with the number of its pair in Column Y. One match has been made for you.
Column X
B Population density
C Population explosion
D Birth rate Column Y A Natural decrease 1 The average number of people per square kilometre
2 The number of live births per 1000 of the population in one year
3 When the death rate is higher than the birth rate 4 Very rapid population growth 1.
(i) Name one reason why world population began to rise from 1800 onwards.
(ii) What will the world population be in 2050?
(iii) Explain two problems associated with the predicted growth of the world population.
2. Explain the following terms: birth rate; death rate; natural increase; natural decrease.
3. Stage 1
10 20 30 40 50
0 Total population Birth rates Death rates
(i) What name is given to this diagram? (ii) At which stage of the diagram is the death rate at its highest? (iii) At which stage of the diagram is the total population growing most rapidly? (iv) At which stage is there a natural decrease in the population? (v) Briefly explain each of the following: – Why the death rate fluctuates (goes up and down) at Stage 1. – Why the death rate declines rapidly at Stage 2. – Why the birth rate declines at Stage 3.
Stage 2 Stage 3 Stage 4 High fluctuating Early expanding Late expanding Low fluctuating
