Q3 of 38 Page 175

Define the following terms:

(a) Birth rate


(b) Death rate.


(c) The rate of growth of population.


(d) Population density.


(e) Exhaustible resource

(a) Birth rate - Birth rate or natality is the number of live births per 1000 people of population per year.

(b) Death rate - Death rate or Mortality is the number of deaths per 1000 people per year.


(c) The rate of growth of population – It is the difference between birth rate and death rate.


(d) Population density – It is the number of individuals per sq. km. at any given time.


(e) Exhaustible resource - Exhaustible resources are the once which are perished by the prolonged us and they can never be renewed or replaced.


More from this chapter

All 38 →
1

Write true (T) or false (F) for the following:

(a) Vasectomy is the surgical method of sterilization in human males……………………..


(b) Tubectomy is the placing of a diaphragm on the cervix……………………………

 2

What is the total world population at present?

 4

Mention whether the following statements are true (T) or false (F). Give reason in support of your answer.

(a) The cow was the first domesticated animal. (T/F)


(b) Rapidly growing industries favoured population rise. (T/F)


(c) Present human population growth is following the arithmetic progression. (T/F)


(d) Birth rate (natality) is the number of live births per hundred people of population per decade. (T/F)


(e) Tubectomy is a popular surgical method of contraception in human males. (T/F)

 5

What is the present rate of growth of the population of the world and of our own country?