I Wonder Why Fish Grew Legs and Other Questions About Prehistoric Life

by Gaff, Jackie

• ISBN13: 9780753453674
• ISBN10: 0753453673
• Format: Hardcover
• Copyright: 2001-09-15
• Publisher: Kingfisher

Summary

Tackling some of the tricky questions about prehistoric life, this new addition to the "I Wonder Why" series explores how dinosaurs and early animal life lived with a unique mixture of realistic illustrations and engaging cartoons. Full-color illustrations.

Table of Contents

What is prehistory?	4	(1)
How do we know about prehistoric life?	5	(1)
When did life on Earth begin?	6	(1)
What is evolution?	7	(1)
What is extinction?	7	(1)
When did fish appear in the oceans?	8	(1)
Were sharks around in prehistoric times?	9	(1)
What were the sea scorpions?	9	(1)
When did plants get a foothold on land?	10	(1)
Why were prehistoric plants important?	10	(1)
Why did fish pop their heads above water?	11	(1)
Why did fish grow legs?	12	(1)
Where did coal come from?	13	(1)
Which insect was as big as a bird?	13	(1)
When did reptiles appear?	14	(1)
Which animals grew sails?	15	(1)
Which were the first furry animals?	15	(1)
What were the ruling reptiles?	16	(1)
How long did dinosaurs rule the land?	17	(1)
Did dinosaurs rule the skies?	18	(1)
Did dinosaurs rule the seas?	19	(1)
Where did birds come from?	20	(1)
When did the first flowers bloom?	20	(1)
Why was Tyrannosaurus king of the dinosaurs?	21	(1)
Were mammals around in dinosaur times?	22	(1)
Which babies lived in their mother's pocket?	23	(1)
How do we know the dinosaurs died out?	24	(1)
What killed the dinosaurs?	25	(1)
Which animals took over from the dinosaurs?	26	(1)
When were elephants as small as pigs?	27	(1)
Which cats had dagger-sized teeth?	27	(1)
Who was Lucy?	28	(1)
When did humans get handy?	28	(1)
Who were the first explorers?	29	(1)
Who were the wise humans?	29	(1)
What were the ice ages?	30	(1)
Did ice age people live in caves?	30	(1)
Who were the first farmers?	31	(1)
Index	32