Science Lesson 54 Word Scramble
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Question | Answer |
bird | an ectothermic vertebrate thst has feathers and a 4-chambered heart. |
contour-feathers | one of the large feathers that gives shape to the birds body. |
down feathers | short, fluffy feathers that are specialized to trap heat and keep the bird warm. |
crop | internal heat |
gizzard | thick-walled, muscular part of the stomach. |
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