You are presented with the quiz "what is released by energy conversion?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "photosynthesis means producers convert from carbon dioxide, water, and solar energy into carbohydrates for themselves" and "water is released by the processes of photosynthesis and respiration". 

So, what's the best answer to the question?


 

       water    