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Question:Uses of bioluminescence
Mostly animals that use bioluminescence are found deep in oceans, where light doesn’t reach. Some species of fish have a luminescent organ on their mouth, it attracts a prey so when they are close enough they caught them and eat them. Some patterns of luminescence on animals help as mark of recognition to the color pattern of animals that live in a sunlight area.

Cyclic behavior
Cyclic behavior is innate behavior that occurs in a repeating pattern. This behavior responds to changes in the environment. The behavior that is based on a 24- hour cycle is called circadian rhythm. Animals can not predict ether is it day or night.
Animals that are active on day are diurnal, and animals that are active ate night are nocturnal. Like bats they are nocturnal or owls. Owl flat face help reflect sound, that help them search for pray at night.

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