So yeah, my APES exam is in the first week of may I believe, and i was wondering what is the best way to prepare? Amazon.com sells the AP environmental science study guide, but I may need more than that. The only thing that really confuses me are the population equations (i.e N0=N0ert) and calculating doubling time, and population rate of increase, etc. can be tricky. Most everything else in APES is pretty simple for me. I believe I have a B average in that class right now. Any Suggestions? :confused: