Biology 2010 Student Edition

Published by Prentice Hall
ISBN 10: 9780133669510
ISBN 13: 978-0-13366-951-0

Chapter 19, History of Life - Assessment - 19.3 Earth's Early History - Understand Key Concepts - Page 567: 24

Answer

Initially earth was very hot and its atmosphere consisted of water vapors and other gases. When earth gradually cooled down, water vapors turned into water and formed water reservoirs such as oceans.

Work Step by Step

Initially earth was very hot and its atmosphere consisted of water vapors and other gases. When earth gradually cooled down, water vapors turned into water and formed water reservoirs such as oceans.
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