Carbon Dioxide.
oxygen
Most animals give off carbon dioxide as a waste product for life. This is called "aerobic".
The active gas in air is HYDROGEN. i learnt this learning my chemistry.
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The main gas produced in aerobic respiration is carbon dioxide (CO2).
oxygen
Methane gas.
carbon dioxide
animals and plants release carbon dioxide from respiration plants alone release oxygen from photosynthesis
CaRbon dioxide.
Carbon dioxide and water vapor.
they release methane gas and co2