A dog walks 12 meters to the east and then 16 meters back to the west. For this motion, what is the distance the dog moved? m (answers should be rounded to the nearest tenth - Example: 0.1, 1.5, or 5.0) What is the magnitude and direction of the displacement? Magnitude: m (round answer to the nearest tenth) Direction (N, S, E, W, NE, NW, SE, SW):

answer( sicar );

answer: the correct answer for the fill in the blank is rods.

rods are the specialized photoreceptor cells that are present in the retina of human eye. they are responsible for vision in the night time ( also called scotopic vision). they have very low visual acuity and color distinguishing ability.

as they are responsible for vision in night time, therefore they are found predominantly in the nocturnal animals.