The ____ of a test is very often studied by having experts review the items in a test to be sure they cover the domain comprehensively

THC, the active ingredient in _______, is classified as a ______

A) marijuana, hallucinogen B) marijuana, stimulant C) cocaine, stimulant D) cocaine, hallucinogen

The structure of the eye that absorbs light, processes images, and sends visual information to the brain is the

a. fovea. b. lens. c. rods and cones. d. retina.