Closely related, morphologically similar sympatric populations, but reproductively isolated, are designated as
Clones
Demes
Clines
Sibling species
July $11$ is observed as
The natural growth rate of population is checked by certain factors. These are known as
According to the population of world, India is placed at
Sex ratio in a species indicates the numerical relation between the number of
Generally there was population growth rate increase in India, but in which of the following year there was decrease in population growth rate