Put the waves in order from highest frequency to lowest frequency

question 1 options:
wave b
wave a
wave c

How does the image distance (di) of a convex lens compare with the image distance of a concave lens? a. the image distance of the convex lens is positive, and that of the concave lens is negative. b. both are negative for a virtual image. c. both are positive for a virtual image d. the image distance of the convex lens is negative, and that of the concave lens is positive.

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

Explain earth's motion, using the terms "precession" and "rotation" in your answer.