Exponential phase of human growth started about
$1$ $A.D.$
$1600$ $A.D.$
$1750$ $A.D.$
$1975$ $A.D.$
It's Obvious
The bio-index number means
$A$ birth control implant having six small, plastic cylinders and with the effective period much longer upto $5$ years is
Average population density on earth is
Which of the following drug is progesterone antagonist and acts as an abortion drug?
Scientificstudy of human population is called
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