Answer:
carbon dioxide goes in and oxygen comes out
Explanation:
i have no idea if that's what you're asking im sorry
The answer is jellyfish :)
It attracts insects which in turns aid pollination.
The answer would be D, because that is the only logical one, and selling 15 cups is not a hypothesis, it is a fact.
D is the one hypothesizing that he will make a profit.
Hope this helps and have a nice day:)