 | GetTextbooks.co.uk Compare Price & Save up to 90% | | |
|
the Colorado 'On the Hill' - FALL 2010 | ||
Section 100 | ||
 | Extinction: How Life on Earth Nearly Ended 250 Million Years Ago (6th Edition) by Douglas H. Erwin Paperback, 320 Pages, Published 2008 ISBN-10: 0-691-13628-9 / 0691136289 ISBN-13: 978-0-691-13628-8 / 9780691136288 Some 250 million years ago, the earth suffered the greatest biological crisis in its history. Around 95% of all living species died out--a global catastrophe far greater than the dinosaurs' demise 65 million years ago. How this happened remains a mystery. But there are many competing theories. So | |