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Polar Bear Why Is Your World Melting: Global Warming - Wells of Knowledge Robert Wells
Polar Bear Why Is Your World Melting: Global Warming - Wells of Knowledge
Robert 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.
32 pages
| Medios de comunicación | Libros Paperback Book (Libro con tapa blanda y lomo encolado) |
| Publicado | 1 de septiembre de 2008 |
| ISBN13 | 9780807565995 |
| Editores | Albert Whitman & Company |
| Páginas | 32 |
| Dimensiones | 266 × 178 × 4 mm · 113 g |
| Lengua | Inglés |
| Colaborador | Robert E. Wells |
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