platypus places her eggs between her tail and abdomen and curls up about them. It takes two weeks for the young to hatch out. The newborn duckbills have teeth and very short bills and feed on milk. The mother has no nipples, but milk oozes out of pore openings in the abdomen and the young lick at these and are nourished in this way. As they grow, their bills become larger and their teeth fall ...
tetrapods, the amphibians are the least advanced and, among the amphibians, the tadpoles are the least advanced. They hatch out of eggs in tiny fish form, with tails and gills and without legs. It is only as they develop that the tails disappear, the gills turn to lungs and legs form.Consequently, if tadpoles resemble coelacanths in their amino acid chains, we can only suppose that the ...
they nest and breed, and them return(another 1,200 miles, another two months to Brazil to feed.The little turtles that hatch out on Ascension Island, and survive, also swim back to Brazil, only to return at the end of the year. Actually, it is common for animals to travel long distances to return to the place where they were born, when they want to breed ; it's called "natal homing." ...
84년도에 모델을 완전히 마꿔 일본특색을 살린 미래형 디자인 차다.4인승 3도어인 해치백(hatch back=뒤가 가파른 차형)으로 값은 9천4백달러선.차실내 시트는 버키트식이고 계기판도 새로운 감각으로 디자인했다. 차대는 종래의 골트를 기반으로 이뤄졌고 터보엔진은 1백2마력의 힘을 지닌 쾌속차다 ...
동아사이언스
디라이브러리
DS스토어
팝콘플래닛
