(Download) "Polar Bear, Why Is Your World Melting?" by Robert E Wells " eBook PDF Kindle ePub Free
eBook details
- Title: Polar Bear, Why Is Your World Melting?
- Author : Robert E Wells
- Release Date : January 01, 2008
- Genre: Science & Nature,Books,Kids,
- Pages : * pages
- Size : 10690 KB
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.
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