Science Chapter 3, Section 4, and Chapter 4, Section 1
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Created by:
deeptisailappan on April 14, 2010
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6 terms
Terms | Definitions |
|---|---|
 reptile | an ectothermic vertebrate that has lungs and scaly skin |
| urine | liquid waste that is produced in the kidneys |
| bird | an endothermic vertebrate with feathers and a four-chambered heart |
| contour feathers | large feathers that give shape to a bird's body and help with flying |
| down feathers | feathers that trap heat and keep a bird warm |
| insulator | material that helps to keep something warm |
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