If you know the reaction of photosynthesis (CO^2+H^2O>C^6H^12O^6+O^2) Then you know cellular respiration. Because you just flip the whole equation around from photosynthesis and then you have cellular respiration.
Personally I don't hear any but lots of my friends say they do. I obviously just hear silence but if you hear a ringing when there not plugged then I'd visit a doctor :D
Hey guys!
Just wanted to let you know, like the other user commented, C <u>is</u> the correct answer!
The answer is D, all of the above are producers.