1. Answer the following questions.
(i) Why are people considered a resource?
Answer
People are considered a resource because with their demands and capabilities
they can create new resources. Nature’s bounty becomes important only when
people find it and make it useful for them. Hence, human resource is also
considered an important and potential resource for the society.
(ii) What are the causes for the uneven distribution of population in the
world?
Answer
The distribution of population in the world is uneven - some areas are very
crowded while some are sparsely populated. There are various reasons behind
uneven distribution:
→ Geographical factors: Favourable topography, availability of mineral and fresh
water resources, favourable climate and soil fertility are some of the reasons
affecting population distribution e.g., Indo Gangetic Plains, Diamond Mines of
South Africa etc are densely populated.
→ Social and Cultural factors: Areas of better housing, education and health
facilities are more populated. Places of religious and cultural significance
also attract people e.g., Varanasi, Jerusalem etc.
→ Economic factors: Places having more industries, transportation and
communication facilities provide better employment opportunities. People are
attracted to these places because of the above reasons e.g., Mumbai, Osaka etc.
(iii) The world population has grown very rapidly. Why?
Answer
The world population has grown very rapidly because the death rate has gone down
as a result of the growth of food supplies and the improvement of medical
facilities. Also, unlike the death rate, the birth rate has remained quite high.
(iv) Discuss the role of any two factors influencing population change.
Answer
The birth rate and the death rate are two factors that influence population
change. The birth rate is the number of live births per 1000 people while the
death rate is the number of deaths per 1000 people. These are the natural causes
of population change. When the birth rate is higher than the death rate,
population increases. When the death rate is more than the birth rate,
population decreases. When the two rates are equal, the population remains
constant. Thus, the birth and death rates affect the balance of population.
(v) What is meant by population composition?
Answer
Population composition refers to the structure of the population. Population
composition helps to know the number of males or female, their age-groups,
literacy, their occupation, their income level and health conditions etc.
(vi) What are population pyramids? How do they help in understanding about
the population of a country?
Answer
The graphical illustration that is used for studying the population composition
of a country is called population pyramids. It shows the present number of males
and females in a country along with their age groups. The age-group distribution
of population tells us the number of dependents and the number of economically
active individuals present in the population.
2. Tick the correct answer.
(i) Which does the term population distribution refer to?
(a) How population in a specified area changes over time.
(b) The number of people who die in relation to the number of people born in a
specified area.
(c) The way in which people are spread across a given area.
► (c) The way in which people are spread across a given area.
(ii) Which are three main factors that cause population change?
(a) Births, deaths and marriage
(b) Births, deaths and migration
(c) Births, deaths and life expectancy
► (b) Births, deaths and migration
(iii) In 1999, the world population reached
(a) 1 billion
(b) 3 billion
(c) 6 billion
► (c) 6 billion
(iv) What is a population pyramid?
(a) A graphical presentation of the age, sex composition of a population.
(b) When the population density of an area is so high that people live in tall
buildings.
(c) Pattern of population
► (a) A graphical presentation of the age, sex composition of a population.
3. Complete the sentences below using some of the following words.
sparsely, favourable, fallow, artificial, fertile, natural, extreme,
densely
When people are attracted to an area it becomes ___________ populated.
Factors that influence this include _________ climate; good supplies of
____________ resources and _____________ land.
Answer
When people are attracted to an area it becomes densely populated. Factors that
influence this include favourable climate; good supplies of natural resources
and fertile land.