MCQ
The supersonic jets cause pollution by the thinning of:
- A$\mathrm{CO}_2$ layer.
- B$\mathrm{SO}_2$ layer.
- C$\mathrm{O}_2$ layer.
- ✓$\mathrm{O}_3$ layer.
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$II.$ Some animals are poisonous
$III.$ Monarch butterfly are distasteful
The above adaptations are against