Provides answers to such questions about various species of whales and dolphins as "Do all whales have teeth?", "How long do most whales live?", "Why do dolphins whistle?", and "Can dolphins save humans?"
英文原版SCHOLASTIC Q & A: DO WHALES HAVE BELLY BUTTONS?学生问答:鲸鱼有肚脐么?/SCHOLASTIC US EPUB, PDF, TXT, AZW3, MOBI, FB2, DjVu, Kindle电子书免费下载。