Too hot? too cold? : keeping body temperature just right
Have you ever wondered why you shiver when you're cold, or sweat when you're hot? It may seem natural that emperor penguins huddle together to stay warm in the Arctic, but why exactly does this prevent them from freezing? Is your dog just out of breath when he pants after running around ou...
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| Format: | EBOOK |
| Other Format: | BOOK |
| Language: | ENGLISH |
| Published: |
Charlesbridge
2013
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| Subjects: |