How Effective are Animal Senses

The range of colors our eyes capture is but a minute fraction of the electromagnetic spectrum. For instance, our eyes cannot see infrared radiation, which has a longer wavelength than red light. However, pit vipers have two small organs, or pits, between their eyes and nostrils that detect infrared radiation.Hence, even in the dark they can accurately strike at warm-blooded prey. Beyond the violet end of the visible spectrum is ultraviolet (UV) light. Although unseen to our eyes, UV light is visible to many creatures, including birds and insects. Bees, for…

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