Across
- 1. to change
- 2. to put things into groups based on similarities
- 6. a place where plants and animals live
- 7. maintains a constant body temperature
- 8. something that makes a person, thing, or group different
- 10. animals that do not have a backbone
- 11. having a body temperature that changes based on the environment
- 12. an animal that eats both plants and meat
Down
- 1. living, growing, or found in water
- 2. an animal that only eats meat
- 3. the backbone, found in all vertebrates
- 4. animals that have a backbone
- 5. a large group of fish
- 9. an animal that only eats plants
