Big Question 1 Unit 1 Words

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Across
  1. 1. Birds lay ... ?
  2. 5. Animals that are born alive and drink milk from their mothers.
  3. 6. Birds are covered in ... ?
  4. 8. Humans are covered in ...?
Down
  1. 2. Animals that live in water breathe through this.
  2. 3. Fish have this instead of skin.
  3. 4. Animals that live both on land and in water.
  4. 6. Most mammals are covered in ...?
  5. 7. Birds fly thanks to their ...?