Classified revision

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