Plants use the carbon dioxide in photosynthesis and produce oxygen for humans. What type of symbotic relation is this?

Mutualism

Explanation:

both humans and plants benefit from it because we breath out carbon dioxide

the calvin cycle has three stages. in stage 1, the enzyme rubisco incorporates carbon dioxide into an organic molecule. in stage 2, the organic molecule is reduced. in stage 3, rubp, the molecule that starts the cycle, is regenerated so that the cycle can continue

for 8 am not sure maybe yes?

for 9 if it is asking if the male is more or less it would be less

hope i even just a little : )