A student conducted an experiment to show Carbon dioxide is released during respiration. List two precautions that he/she must take for obtaining correct observations.
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A student conducted an experiment to show Carbon dioxide is released during respiration. List two precautions that he/she must take for obtaining correct observations.
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2.He/she mustn't pass too much of exhaled air as excess of CO2 may lead to disappearance of the milky white colour.