Define population.

The density of a population in a given habitat during a given period to increase in population and two of them contribute to a decrease in population 1. Name the four basic process. 2. Which of these cause a decline and which cause an increase in population ?

Analyse the interactions of two species population.

Draw diagram to show distribution in a increasing population.

Give the reason for decline in wildlife population.

Give an account of the role of migration in a population.

The permanent decrease in population occurs due to

Express each of the following physical statements in the form of differential equation. (ii) The population P of a city increases at a rate proportional to the product of population and to the difference between 5,00,000 and the population.

The total population in India alarmingly increased to 1 billion according to 2001 census. The population growth rate was still around 1.7% a rate at which our population could double in 33 years. Cite the probable reasons for such an increase in population growth rate.