A dense network of neurons found in the core of the brain stem that arouses the cortex and screens incoming information is called the:

Medical advancements cost money, while adding more to the overall costs of treatment, and many older adults in the U.S. have neither the access nor the funds necessary to take advantage of the advancements.

a. true b. false

Mr. Bakken is outlining a classification system in his science class. Which of the following is he most likely utilizing?

a) a natural concept b) a prototype c) a formal concept d) a schema