Vocabulary for grade 801-Unit 1 Flashcards
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| 7438454293 | Feathers | the soft, light covering of a bird |  | 0 |
| 7438466750 | Amphibian | able to live both on land and in water; N. |  | 1 |
| 7438478658 | Mammals | breathe with lungs, have fur or hair |  | 2 |
| 7438489549 | Gills | organs that exchange oxygen and carbon dioxide with water |  | 3 |
| 7438504522 | Wings | birds use them for flying |  | 4 |