Information about birth rate, death rate, sex ratio, age distribution, etc. of a population is obtained from
Define the following: (i) Population (ii) Sanitation (iii) Deforestation (iv) Birth control (v) Rhythm method (vi) Abstainence (vii) Test-tube baby (viii) Birth rate (ix) Death rate (x) Population density (xi) Natality
If natality rate is parallel to mortality rate then population