Chey is taking a psychology class that involves classical conditioning two groups of rats, using a tone (cs) followed by a shock (ucs) for group 1, and using a taste (cs) followed by a shock (ucs) for group 2. when asked what she is examining, she answers that she's looking at:

Texas’ gulf coastal plains are the western extension of the coastal plain extending from the atlantic ocean to beyond the rio grande. its characteristic rolling to hilly surface covered with a heavy growth of pine and hardwoods extends into east texas. in the increasingly arid west, however, its forests become secondary in nature, consisting largely of post oaks and, farther west, prairies and brushlands.