Explain the three components of population change in the world. Analyse the impacts of population change.
The three components of population change are:
(i) Births
(ii) Deaths
(iii) Migration
The impacts of population change:
(i) Population growth beyond a certain level leads to problems. Of these the depletion of resources is the most serious.
(ii) Population decline is also a matter of concern. It indicates that resources that had supported a population earlier are now insufficient to maintain the population.
(iii) The deadly HIV/AIDS epidemics in Africa and some parts of the Commonwealth of Independent States (CIS) and Asia have pushed up death rates and reduced average life expectancy. This has slowed down population growth.
Describe any five characteristics of ‘Commercial Livestock Rearing’, practised in the World.
Differentiate between bilateral trade and multilateral trade. Explain how ports are helpful in trade.
(26.1) In the given political outline Map of the World, four features A, B, C and D have been shown. Identify these features with the help of information given below and write their correct names on the lines drawn near them.
A: An important sea port
B: A terminal station of Australian Trans-Continental Railway
C: An area of subsistence gathering
D: The country with lowest growth rate of population (1995-2000) in Asia.
(26.2) On the given political outline Map of India, locate and label the following with appropriate symbols:
A. The state having highest literacy rate.
B. The leading state in the production of Jute.
C. The northern most international airport.
Describe any five patterns of rural settlements in the world on the basis of forms or shapes.
The decades 1921-51 are referred to as the period of steady growth of population whereas the decades 1951-1981 are referred to as the period of population explosion in India. Explain giving reasons.
