The scientist who propounded that population is a group of species
Darwin
Lamarck
Odum
Clark
Worlds $AlDS$ day and world earth day are celebrated on. and.. respectively
Family planning program was initiated in
According to $1991$ census, rural population of India is
According to $1991$ census, the maximum percent of population increase is in the state
Oral polio vaccine and hepatitis first dose is given to a child at