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Polar bear, why is your world melting?
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.
Availability
| 19549 | 363.73874 WEL | Non-Fiction | Available |
Detail Information
- Series Title
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Wells of Knowledge Science Series
- Call Number
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363.73874 WEL
- Publisher
- Chicago, USA : Albert Whitman & Company., 2008
- Collation
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32 pages : illustration ; 17 cm
- Language
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English
- ISBN/ISSN
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9780807565995
- Classification
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363.73874
- Content Type
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text
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- Carrier Type
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- Edition
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- Subject(s)
- Specific Detail Info
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- Statement of Responsibility
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