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प्रश्न
Thicker chimney has been shown on the push button of the lighter to show that ______.
विकल्प
Only humans can stop pollution.
Only developed countries contribute to pollution.
Pollution can be curbed by shutting factories.
chimneys need to be made more efficient to save earth.
MCQ
रिक्त स्थान भरें
उत्तर
Thicker chimney has been shown on the push button of the lighter to show that only humans can stop pollution.
shaalaa.com
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