In a frequency distribution the more intervals the better, regardless of whether some intervals have zero frequency

A soldier stationed at a base in northern Alaska is dressed in his all-white camouflage

He wants to know the exact distance from which another person can distinguish him from the snowbank in which he is hiding. The soldier is concerned with the A) just noticeable difference. B) absolute threshold. C) visual processing boundary. D) limits of perceptual ability.

Ashley is doing the lighting for a stage show. One scene requires yellow lighting. She has no yellow lights but decides to make a yellow lighting effect by combining a red light with a green light on the stage. This is known as ________ color mixing

a. subtractive b. additive c. dichromatic d. nonspectral