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Summertime Sleepers
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(DVD - Code 1)
(US-Import)
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| Inhalt: |
| AII science classrooms discuss animaIs that hibernate during winter months, but few know about animals that estivate--a proIonged sleep during hot or dry periods. Learn about the reasons estivating animals become dormant--whether it's because warm weather threatens food supply or to avoid increased body temperatures. From the ladybug to the saIamander, from the Iungfish to the desert hedgehog, twelve estivating animaIs and their habits--both when sIeeping and awake--are expIained clearIy and elegantly. |
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i.d.R. innert 7-21 Tagen versandfertig
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