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प्रश्न
What is the source of carbon dioxide in air?
एक पंक्ति में उत्तर
उत्तर
Respiration by animals and plants and burning of fuel.
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क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
What is the source of carbon dioxide in air?
Respiration by animals and plants and burning of fuel.