MCQ
Industrial melanism is an example of:
- ADrug resistance.
- BDefensive adaptation of skin against $\text{UV}$ radiations.
- ✓Protective resemblance with the surrounding.
- DDarkening of skin due to industries.
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Reason : This happens because of the presence of $hCG$ in the blood of females.
$Statement\; 2$: This requires not two children per couple but a little more effort on reduction of this number