1.

Gas X is an active component of air . X reacts with caobon to form gas Y. Y is one of the products of _______________ and _____________.A. respiration , combustionB. photosynthesis , respirationC. combustion , transpirationD. photosynthesis, transpiration

Answer» Correct Answer - a
Gas X is oxygen and Y is carbon dioxide . Carbon dioxide is one of the products of both combustion and respiration.


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