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Polar Bear, Why Is Your World Melting?
Polar Bear Why Is Your World Melting
Author: Robert E. Wells
In the Arctic, the summer ice is melting, making it hard for polar bears to survive. Why is the world getting warmer? The heat of the sun is trapped by the "greenhouse" gases that surround Earth--carbon dioxide, methane, nitrous oxide, and water vapor.
ISBN-13: 9780807565988
ISBN-10: 0807565989
Publication Date: 9/1/2008
Pages: 32
Edition: 1
Reading Level: Ages 4-8
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Publisher: Albert Whitman & Company
Book Type: Hardcover
Members Wishing: 0
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