Q. 35.0( 1 Vote )

Answer question n

Answer :

(a) Common signs of sexual maturity in Boys-

i. Thickening of vocal cords due to which cracks in voice occurs.

ii. Initiation of sperm production.

Common signs of sexual maturity in Girls-

i. Shrillness invoice

ii. Initiation of ovulation and menstruation.

b) Decline in the Female to Male Sex Ratio; Gender Disbalance

c) Oral Contraceptive Pills(OCP)

d) The rate of birth and death in a given population determine s the size of a population.

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What are the funcScience - Board Papers