Paragraf tamamlamaSoru #10049
Echolocation in cetaceans, particularly toothed whales and dolphins, represents one of nature's most exquisite sensory adaptations. These marine mammals produce high-frequency ultrasonic clicks in their nasal passages beneath the blowhole. ----. When these sonic pulses strike distant fish or seabed topography, the returning acoustic echoes are received through fat channels in the lower jaw and routed directly to the inner ear, allowing the animal to construct a three-dimensional mental map in complete darkness.
- A)These acoustic emissions are focused into a concentrated directional beam by an oil-filled cranial organ called the melon
- B)Baleen whales, by contrast, filter plankton using fringed plates of keratin hanging from their upper jaws
- C)Many commercial sonar systems emit sounds that cause cetaceans to become permanently disoriented
- D)Consequently, dolphins frequently beach themselves along coastal sandbars during severe navigational storms
- E)Dolphin teeth contain growth rings that marine biologists utilize to estimate individual biological longevity
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Doğru cevap: A) These acoustic emissions are focused into a concentrated directional beam by an oil-filled cranial organ called the melon
Çözüm: Seslerin burun kanallarında üretilmesinden sonra bu seslerin nasıl odaklandığını açıklayan "These acoustic emissions are focused into a concentrated directional beam by the melon" cümlesi parçanın akışına kusursuz uyar. Doğru cevap A'dır.