Determine the number of cycles the sine function shown to the right has in the interval from 0 to 2. Find the amplitude and the period of the function.

frequency or wavelenth of em radiation in a vacuum

i think the answer is a, hope this : )

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.