To change this sentence into indirect speech, it would become "Mbali asked if she should go to church."
Hope this helps!
P.S. There are many different ways to change this sentence into indirect speech. My answer may not be word-for-word correct, but if you change i tup a little bit I'm sure it will work! :D
Well if you think about it photosynthesis shows how the plants evolves so if you were to use a diagram that would support the fact that leaves take in nutrients and energy.