Maxine is generally an upbeat person, but in February she tends to feel sad and gains weight. Maxine shows symptoms of:

Combining all of the colors of the spectrum in additive color mixing results in ______

a. opponent processes c. non-spectral colors b. white light d. primary compliments

The rate of full immunization of children in the United States rose from 55% in 1992 to 90% in

1999. The main reason for this rise is a. pediatrician demand. b. the increase effectiveness of immunizations. c. a federally-funded media campaign. d. Forced immunization programs.