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

(a) Cow was the first domesticated animal.

(b) Rapidly growing industries favoured population rise.

(c) Present human population growth is following arithmetic progression.

(d) Birthrate (natality) to the number of live births per hundred people of population per decade.

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

Solution:-

(a) False.

The dog was the first domesticated animal.

(b) True.

The scientific and industrial revolutions marked a turning point in human population increase. Rapidly expanding industries made human life more pleasant, providing more job possibilities and increasing food output.

(c) False.

Present human population growth is following geometrical progression.

(d) False.

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

(e) False.

Vasectomy is a popular surgical method of contraception in human males.