Most of the focusing is done at the front of the eye by a clear membrane that bends light inward. This membrane is called the

Dan has been diagnosed as suffering from acrophobia. Which of the following occupations would be a really bad choice for him?

a) typist b) bridge painter c) computer technician d) grade-school teacher

Damage to the hunger satiety system can produce a very fat rat, a condition called

a. acquired bulimia. b. hipocampal obesity. c. hypothalamic hyperphagia. d. acromegaly.