In a specific area, the negros, aryans, smartians and mongolians are living. They constitute
A group
Monospecific population
Polyspecific population
Heterogenous population
Population density of India is
In India, marriageable age for boys is ______ and girls is ______ respectively.
Which of the following methods is used during abortion?
In vasectomy, a small part of the .................. is removed through a small incision on the scrotum.