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1. Vision

   Linked via "photon absorption"

   The retina contains two primary types of photoreceptor cells: rods and cones. Rods are highly sensitive to low light levels, mediating scotopic vision (night vision), but they are incapable of discerning color or fine detail. Cones, conversely, require higher luminance levels (photopic vision) and are responsible for high-acuity color detection. Humans typically possess three types of [cones…