SORU: aşağıdaki parçaya göre cevaplayınız
It is clear from the passage that toothed whales
Baleen whales and toothed whales each have a unique
way of vocalizing. Only baleen whales produce long
sequences of deep sounds known as whale songs. They
have a larynx, an organ at the top of the trachea, which
may be involved in sound production. Researchers are
unclear about the organ's role in the songs as whale
larynxes are unlike those of humans, which have vocal
chords. Toothed whales, on the other hand, rely on
sequences of high-pitched clicks and whistles for both
echo location and communication with their mates. Their
phonic lips, a structure analogous to human nasal
passages, press together when air is forced through them,
vibrating the surrounding tissue. The sound waves then
penetrate an oily organ in the whale's head, called the
“melon”, where they are focused into a beam of sound.
When this beam strikes a fish, the seabed, or another
object, the sound is reflected back to the whale as an
echo. Toothed whales can thus locate prey and navigate
in total darkness. However, during their long, deep dives,
toothed whales cannot inhale air every time they want to
produce a sound. So they collect it in a sac at the back of
their head and reuse it.