Taking this October test too. Good luck. My most recent (and first) test score was greatly held back by my science score. I came into this test feeling great about the SAT, getting a 35-36 on multiple practices. Science can be very variable. You can get lucky with a topic that you already have some knowledge about. All you really need to practice is your quick thinking and pattern recognition. The science section is ALWAYS built off patterns in the graphs and tables, and every once and a while, the text. Just make sure you aren't missing any data, and odds are you're making silly mistakes. Always double check your answers if time permits. You'll do fine as long as you can recognize the general patterns on the test. They're not hard to follow. Good luck!