Polar Bear, Why Is Your World Melting? (Wells of Knowledge Science Series)
Book Details
Author(s)
Wells, Robert E.
Publisher
Albert Whitman & Company
ISBN / ASIN
0807565997
ISBN-13
9780807565995
Availability
In Stock.
Sales Rank
#1,164,503
Marketplace
United States 🇺🇸
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Description
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.
