Across
- 2. An animal that generates temperature internally is
- 4. When an animal travels back and forth from one place to another it
- 7. Reptiles and all fish have it on the outside to protect them
- 8. They live in water, have scales, gills and fins they are
- 9. They need this gas to stay alive
- 10. One of a pair of organs fish use to breath to stay alive
Down
- 1. I have a back bone i am a
- 3. I give birth to live babies and feed them milk I am a
- 5. If I live or grow in water I am
- 6. The fish use them to swim faster or to keep balance
- 7. A large group of fish or other aquatic animals that swim together