Hey, Mom? If the volcano in Iceland somehow erupted. What would happen to us?
Well, It is a bit complicated. We would not get as much oxygen and energy that we need.
Well why is that? Does it have to do with photosynthesis and cellular respiration?
Yes, Indeed it does. Do you know why?
One of the most important things needed for photosynthesis is light energy which comes from the sun. But if ash clouds start moving from Iceland to the Midwestern part of the U.S, then it will block the sun. No sun means no light energy which also means-
Photosynthesis cant occur!
YES! I have taught you well.
Whatever. Can we go inside? It is getting hot.
Wait. How does it affect cellular respiration then?
Oh, that's easy. Photosynthesis and cellular respiration kind of work with each other. Without one process, then the other doesn't occur.