This is a fabulous piece of work - lucky teacher you have! I added a few spelling changes and a few comments about where in USA has so much rain that plants couldn't grow. Also, I suggest that you use mm rather than inches - what about finding some rainfall figures for Amazonia and evenb England's wettest region the Lake District. I'm noy attaching the work because the file is so HUGE!
Well done-it really is very good! Actually, I'd love to put it on my website at http://www.geographyphotos,com for teachers to show their classes!