Many animals are either diurnal (active during daylight) or nocturnal (active during night). What do the abilities of rods and cones to respond to different lighting conditions tell us about the niche of human beings relative to night and day?

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The Answer of  Many animals are either diurnal (active during daylight) or nocturnal (active during night). What do the abilities of rods and cones to respond to different lighting conditions tell us about the niche of human beings relative to night and day?

Many Animals Are Either Diurnal (Active During Daylight) or Nocturnal