Across
- 5. animal without a backbone
- 7. cold-blooed vertebrate that lives both in and out of water
- 9. scientist who studies animals
- 10. warm-blooded vertebrate with fur or hair
Down
- 1. animal with tough, scaly skin that uses its surroundings to control its body temperature
- 2. organize into categories
- 3. aquatic vertebrate with gills and fins
- 4. animal with a backbone
- 6. vertebrate with feathers known for flying
- 8. a place where plants and/or animals live and grow