‘Essay on population’ was published by
Malthus
Lamarck
Darwin
Mendel
(a) Thomas R.Malthus ($1778$ $A.D.$).
Which of the following method of contraception has maximum chances of failure?
According to $1991$ census, the minimum percent of population increase is in the state
The concept that “Population tends to increase geometrically while food supply increases arithmetically'' was put forward by
Presently, the world population doubles after every
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