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Across
  1. 4. live on land and in water, have mois skin and lay eggs in gelatinous masses
  2. 6. _____ thing: it must be made of cells, grow and develop, use energy, reproduce and adapt.
  3. 7. they have a skeletal structure with a spinal column or backbone
  4. 10. live on land and in water, have scales and dry skin. Most of them lay eggs with a protective shell
Down
  1. 1. ______ thing: anything that was never alive.
  2. 2. the babies drink milk from their mothers.
  3. 3. they have no backbone or internal skeleton
  4. 5. cold-blooded; have bodies in 3 parts, wings and lay eggs
  5. 8. warm-blooded animals that have feathers and wings
  6. 9. cold-blooded animals that live in water