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(a) Which gas is vital for the survival of all living organisms?(b) Based on the above answer , explain how humans exchange gases?(c) Name the process of burning of a substance in the presence of air. |
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Answer» (a) Which gas is vital for the survival of all living organisms? (b) Based on the above answer , explain how humans exchange gases? (c) Name the process of burning of a substance in the presence of air. |
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