‘Essay on population’ was published by
Malthus
Lamarck
Darwin
Mendel
(a) Thomas R.Malthus ($1778$ $A.D.$).
$1^{st}$, $2^{nd}$, $3^{rd}$ dose of $DPT$ is given by
$I$. $6 \;weeks$ after birth
$II$. $10 \;weeks$ after birth
$III$. $14 \;weeks$ after birth
$IV$. $24 \;weeks$ after birth
$V$. $29\; weeks$ after birth
In which one of the following the birth rate is high & death rate is normal
Presently, the world population doubles after every
Population density of India is
The concept that “Population tends to increase geometrically while food supply increases arithmetically'' was put forward by
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