MCQ
Eutrophication causes $a/ an:$
- ADecrease in organic matter.
- BIncrease in inorganic nutrients.
- ✓Decrease in dissolved oxygen.
- DIncrease in dissolved oxygen.
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$I$. Ovulation do not occur during the lactational period
$II$. Chances of the failure of contraception are almost nil upto six months following parturition
$III$. Side effects are almost nil
$IV$. It is a natural method of contraception
$V$. It increases phagocytosis of sperms