약간 더 쉬운 문제

Although no post - cranial bones of Pakicetus were found, it seemed logical to assume, from the teeth and ear structure, that the animal spent a great deal of time in shallow water looking for food, but returned to land to rest, somewhat like a modern sea lion.

 

a) By swimming in shallow water, Pakicetus and sea lions alike lost their post - cranial bones, but this gave them the ability to stay underwater for long periods of time

 

b) The structure of teeth and ear showed that Pakicetus mostly inhabited the water in search of food, but rested on land, even though its posr - cranial bones were never discovered.

 

 

 

힌트: /주사위 2

b

b ?

a??

b

b랍니당

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