Across
- 2. These vertebrates make milk for their offspring.
- 4. These characteristics are given to you from your parents.
- 6. This line graph shows a ____________ relationship.
- 7. These animals done have a spine.
- 11. These invertebrates have wings and 6 legs.
- 12. Birds have these, they help them fly.
Down
- 1. This line graph shows a _____________ relationship.
- 3. These characteristics are caused by your surroundings.
- 5. This is a 'skeleton' on the outside of an invertebrate.
- 8. These animals have spines.
- 9. These invertebrates have 8 legs.
- 10. Fish have these, they help them swim.