Brightness constancy is most clearly facilitated by

proximity. retinal disparity. relative luminance. interposition.

In a stagnant pool of water, a crayfish may spend much of its time lying with one side of its carapace near the surface of the water. in this position, it will move the walking legs on that side in a rhythmic back-and-forth motion. explain the likely function of this behavior.

Which best represents the law of conservation of mass ?

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