Answer:
The trichromatic theory states that there are three receptors in the retina that are responsible for our perception of color. The opponent-process theory states that there are three opposite reacting complexes in our retina that control our perception of color. together the theories explain how we perceive color and how those perceptions are connected to our nerve cells.
Explanation:
The trichromatic theory is about the receptors that help us perceive color. The opponent- processing theory explains how those receptors are connected to our nerves.
A. You think positively about yourself
The main risks of being unprotected from the sun is sunburn, skin cancer, skin damage, and premature aging could be effects of being exposed to the suns UV rays
They can constrict or dilate because their walls are muscular.
