Many of the multiple-choice questions are simply testing whether you know the terms by throwing in fill-in-the-blanks. But with so many terms, how do you remember them? Use Quizlet. Quizlet allows you to learn through virtual flashcards, either by playing games or testing yourself (you can customize the test you create for yourself, choosing multiple-choice, free-response, matching, etc.). There is also a learn mode. What’s great about Quizlet is that you can create your own sets (which I recommend for better learning), or if you’re short on time, you can use others’ pre-made flashcards. Just type in “AP Environment” and a whole bunch of options will come up.