Question

What gas is produced by plants as a waste product of photosynthesis

Answer 1

carbon dioxide

Oxygen is given off during photosynthesis as a waste product. This is the reaction that only plants and some algae and bacteria can do. They take sunlight and combine carbon dioxide (CO2) and water (H2O). They create glucose (C6H12O6) and oxygen gas (O2).

Respiration

Answer 2

Hi mate

The gas that is produced by plant as a waste product of photosynthesis is oxygen which is necessary for human survival

Hope this helps u

Thanks