Give differences : Immigration and Emigration
Immigration | Emigration |
$(1)$ Inward movement into a local population. | $(1)$ Outward movement from local population. |
$(2)$ Increases population size and so gene pool. | $(2)$ Decreases population size and so gene pool. |
$(3)$ For better condition. | $(3)$ To defend from unfavourable conditions, like scarcity of food. Shelter or mate; natural calamaties like draught, floods etc. |
In India, the population growth
The rate of natural increase in human population refers to
If birth rate is $100 ,$ death rate is $10$ and number of individuals in population group is $1000 ,$ then what will be the percentage of natural growth rate?
Capacity of the environment in which a species can get maximum nutrition is called