Unlike the other sections of the MCAT, the CARS section does not require knowledge of scientific concepts. The best way to do well on this section is to read as many practice passages as you can. This will help you improve your reading and comprehension skills. It will also help you understand the intent of the AAMC test creators. You will have an advantage if you practice the questions before taking the actual test.
AAMC FL1 CARS – How to Ace the CARS Section on the MCAT