Across
- 3. bodies have three parts:head, thorax, and abdomen
- 6. sea stars, sea cucumber, and sea urchin
- 7. glands special tissues that produce milk for young animals
- 8. have gills
- 9. animals that heat bodies from heat in their environment
- 11. leeches
- 13. has a mantle
- 16. lizards, snakes, turtles, and alligators
- 17. animals that generate heat from the inside
Down
- 1. corals, anemones, jellyfish, and hydras
- 2. frogs and salamanders
- 4. body shape is flat and have bilateral symmetry
- 5. the body form of an animal changes as it grows from an egg to an adult
- 10. live in water and cannot move as adults
- 12. humans, coyote
- 14. have feathers
- 15. is a flexible rod-shaped structure the supports the body of a developing chordate