Fish鱼
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作者： Jackie Gaff著
出 版 社：
出版时间： 2008-8-1字数：版次： 1页数： 32印刷时间： 2008/08/01开本： 16开印次： 1纸张： 铜版纸I S B N ： 9780753405536包装： 平装内容简介
“Provides young children with an excellent starting-point for exploring their universe。”Child Education
“Designed to capture the imagination。”School Librarian
The best-selling I Wonder Why series answer demanding questions in an unrivalled child-friendly and informative style，guaranteed to arouse the reader’s curiosity and develop erading skills。 I Wonder Why Fish Grew Legs is jam-packed with fascinating facts about prehistory，from“When did life on Earth begin？”to“What were the Ice Ages？”
目录
What is prehistory？
How do we know about prehistoric life？
When did life on Earth begin？
What is evolution？
What is extinction？
When did fish appear in the oceans？
Were sharks around in prehistoric times？
What were the sea scorpions？
When did plants get a foothold on land？
Why were prehistoric plants important？
Why did fish pop their heads above water？
Why did fish grow legs？
Where did coal come from？
Which insect was as big as a bird？
When did reptiles appear？
Which animals grew sails？
Which were the first furry animals？
What were the ruling reptiles？
How long did dinosaurs rule the land？
Did dinosaurs rule the skies？
Did dinosaurs rule the seas？
Where did birds come from？
When did the first flowers bloom？
Why was Tyrannosaurus king of the dinosaurs？
Were mammals around in dinosaur times？
Which babies lived in their mother’s pocket？
How do we know the dinosaurs died out？
What killed the dinosaurs？
Which animals took over from the dinosaurs？
When were elephats as small as pigs？
Which cats had daggersized teeth？
Who was Lucy？
When did humans get handy？
Who were the first explorers？
Who were the wise humans？
What were the Ice Ages？
Did Ice Age people live in caves？
Who were the first farmers？
Index
