ÀÛ¼ºÀÏ : 19-04-13 20:52
[Inter] Animal signal in the Rain forest
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Animal signal in the Rain forest.docx (26.2K) [12] DATE : 2019-04-15 16:26:42 |
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4. In the varied and constantly changing light environment of the forest, an animal must be able to send visual signals to members of its own species and (at the same time) avoid) being detected by predators.
19. The best signal depends not only on its brightness but also on how well it contrasts with the background against which it must be seen.
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23. Less colorful birds and animals that inhabit the rain forest tend to rely on forms of signaling other than the visual, particularly over long distances.
24. The piercing cries of the rhinoceros horn bill characterize the Southeast Asian rain forest, as do the unmistakable calls of the gibbons.
27. The male rifle bird exploits both of these modes of signaling simultaneously in his courtship display.
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18. In the green-to-yellow lighting conditions of the lowest levels of the forest, yellow and green would be the brightest colors, but when an animal is signaling, these colors would not be very visible if the animal was sitting in an area with a yellowish or greenish background.
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