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Q: Christy notices that a certain kind of moth flies to the light on her porch. Which behavior is the moth exhibiting? A. Taxis B. Migration C. Imitation
A: Night flying insects evolved to navigate by the light of the moon. [ By keeping the moon's reflected light at a constant angle, the insects can maintain a steady flight path and a straight course. Artificial lights interfere with an insect's ability to detect the moonlight. They appear brighter, and radiate their light in multiple directions. Once an insect flies close enough to a light bulb,
it attempts to navigate by way of the artificial light, rather than the moon. Since the light bulb radiates light on all sides, the insect simply cannot keep the light source at a constant angle, as it does with the moon. It attempts to navigate a straight path, but ends up caught in an endless spiral dance around the bulb. ]
mythmoh|Points 4539|
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Asked 4/11/2012 8:35:13 AM
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