Number of individuals of a population in a habitat per unit area is called density and density is measured in different units.

Individuals with a particular trait may increase in a population as a result of the following: (i) Natural selection: When that trait offers some survival advantage. (ii) Genetic drift: When some genes...

The given substances in the increasing order of their densities can be represented as: Air < Exhaust from chimney < Cotton < Water < Honey < Chalk < Iron 

(b) The number of persons added each year

 a. Nos. / Vol;  b. Coverage / area;  c. Biomass / area;  d. Nos. / area;  e. Wt. / area 

1. Mr. Sagar is working at the top level management. He is responsible for the welfare and survival of the organisation. He formulates overall organizational goals and strategies for their...

The correct answer is b. 200

c. It will increase

c. Mortality and emigration

Natality refers to Birth rate Natality – increase in the number of individual due to birth