Respuesta :

Glucose is what photosynthesis make

Carbon dioxide is what the trees use for in order for us to breath

Nitrogen theres not a lot left its at 1% or less so the only reasonable answer is

Oxygen
shardm

Answer:

The answer is Carbon Dioxide/co2

Explanation:

For a clearer response, carbon dioxide is one of the substances needed for the process of photosynthesis. Oxygen is not essential because that molecule is what is being released. Glucose is the molecule being produced.