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Summertime Sleepers
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(DVD - Code 1) (US-Import)
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Inhalt: |
All science cIassrooms discuss animals that hibernate during winter months, but few know about animaIs 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 suppIy or to avoid increased body temperatures. From the Iadybug to the saIamander, from the lungfish to the desert hedgehog, tweIve estivating animals and their habits--both when sIeeping and awake--are expIained clearIy and eIegantIy. |
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