Environmental science is extremely important in today’s world. Just by watching the news, you can learn a lot about important issues that may be covered on the exam (from air pollution in China to global warming to the environmental factors behind California’s recent drought). In the free-response section, you can spice up your answers with anecdotes about current events. Watching (and especially discussing) current events also serves as a great way to remember information rather than through rote memorization of a textbook.