That is a true statement. The receptors of our olfactory system are free nerve endings that are located in the Philadelphia nasal cavity and are open to the surroundings.
Cones help the eye recognize all the shades of the trees because they are highly active in brilliant light, which is present on a crisp fall day. Cones provide for photopic vision.
In contrast, because they are more active in low light, rodes have scotopic vision.
Since rods impair color vision, the nighttime environment appears to us in grayscale. The rod cells that make up the human eye number over 100 million.
Cones use much more light because they are used to see color. Cones are available in three distinct hues: blue, green, and red.
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