Question

The extent of fear in people is proved by the fact:

a) That they keep themselves indoors

b) That they move in groups

c) That they carry riffles even when their kids play outside​

Answer 1

Answer:

from which lesson it is

Answer 2

Explanation:

The principle of reversibility presupposes that the attenuation of a light ray during its passage through an optical medium because of reflection, refraction, and absorption is not affected by a reversal of the direction of the ray.