Answer 1

Contraception includes methods or ways to prevent fertilization and pregnancy in a fertile female as a result of successful copulation between a fertile male and female.
Some of the major advantages of adopting various contraceptive methods include:
(i) Prevention of unwanted pregnancies  
(ii) Help in family planning and population control
(iii) Some contraceptive devices like condoms and female diaphragm prevent the spread of STDs like AIDS and Hepatitis B.