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प्रश्न
Amazon rain forests are considered as 'Lungs of the planet' as they contribute ______ of the total oxygen in the earth's atmosphere.
विकल्प
10%
15%
20%
30%
MCQ
रिक्त स्थान भरें
उत्तर
Amazon rain forests are considered as 'Lungs of the planet' as they contribute 20% of the total oxygen in the earth's atmosphere.
shaalaa.com
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