Across
- 4. If animals have an exoskeleton and jointed legs they are referred to as:
- 6. A reptile that lives in water.
- 7. This keeps oceanic mammals warm.
- 8. The body of a myriapod is divided into many:
- 9. A class of animals that only lay eggs.
- 10. Frogs must lay their eggs in water because tadpoles have this.
- 11. A class of animals that can give live birth and lay eggs.
Down
- 1. The milk for mammals are produced in:
- 2. The body covering of birds.
- 3. Mussels are invertebrates grouped under:
- 5. Animals are categorized into groups according to their:
- 8. The body covering of fish.