Across
- 1. antonym for "above"
- 5. compound word ("air" + "planes")
- 7. synonym for "flutter"/"drift"/"glide"
- 8. synonym for "maintains"/"preserves"/"retains"
- 13. antonym for "bottom"
- 14. synonym for "sufficient"
- 15. past tense of "learn"
- 16. root word "fast" + suffix "er"
- 17. rhymes with "dust"
Down
- 2. antonym for "short"
- 3. past tense of "watch"
- 4. the 5 classes of chordates are fish/amphibians/reptiles/______/mammals
- 6. antonym for "pull"
- 7. antonym for "fur"
- 9. synonym for "humans"/"folk"
- 10. an appendage with feathers that lets birds fly
- 11. the gases that make up our atmosphere
- 12. antonym for "over"
- 16. synonym for "quickly"/"rapidly"/"swiftly"