정육면체 똥을 만드는 동물
Wombats make cube shaped poop, and now we know why.
Before you read
Before you read
어떤 동물은 정육면체 모양의 똥을 눠요. 이 동물은 웜뱃이에요. 호주에 살아요. 땅을 파요. 밤에 풀을 먹어요. 작은 정육면체를 남겨요.
오랫동안 아무도 이유를 몰랐어요. 모서리를 만들기는 어려워요. 다른 동물은 둥근 똥을 눠요. 과학자들은 웜뱃의 몸속을 살펴봤어요.
웜뱃의 몸속에는 딱딱한 벽이 있어요. 그 딱딱한 벽이 모서리를 만들어요. 웜뱃은 정육면체를 바위 위에 놓아요. 이것은 자기 자리를 표시해요. 둥근 똥은 굴러갈 거예요.
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