Projections, fires, rainbows, fog, bright rays of light, explosions, lightning, strobe lights or black light are all examples of:

a. ultraviolet light

Fertilizer runoff can cause algae to grow rapidly and pollute an aquatic ecosystem. Excess amounts of nitrogen and phosphorus are the _____ that cause this growth.

a) plankton b) nutrients c) food d) compounds

The term "Mannerism" describes a style that

a) was individualistic and consciously artificial. b) was concerned with stability and serenity. c) employed strong contrasts between light and shadow. d) employed oil paint for highly realistic textures.