animal classification

Edit Answers
12345678910
Across
  1. 3. a large group of fish that swim together
  2. 5. an animal without a backbone
  3. 7. having a constant body temperature
  4. 8. living, growing, or found in water
  5. 10. organs that fish use to breathe underwater
Down
  1. 1. only able to control body temperature by using surroundings
  2. 2. an animal that can give birth, has hair, feeds milk from its own body, and is warm blooded
  3. 4. a bony spine covered with skin that stick's out from a fish's body and helps it swim
  4. 6. an animal with a backbone
  5. 9. to put things into groups based on similarities