Show CO2 is released in respiration by activity

1.	Show CO2 is released in respiration by activity
Answer» During the respiration , CO2 is released.During exhalation take a test tube containing Ca(OH)2 near your mouth...You will saw that the Ca(OH)2 becomes milky...Ca(OH)2 becomes milky only in presence of CO2 ...Therefore, co2 is always released during respiration...

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