MCQ
Edaphic factor refers to:
- AWater.
- BSoil.
- CRelative humidity.
- DAltitude.
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Reason : Low oxygen concentration is provided by leghaemoglobin.
| $Country$ | $Birth\, rate$ $/1000$ | $Death$ $/1000$ |
| $M$ | $15$ | $5$ |
| $N$ | $25$ | $10$ |
| $O$ | $35$ | $18$ |
| $P$ | $48$ | $41$ |