Cl5-S-ANIMAL LIFE_Hard

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Across
  1. 1. The only birds that can fly backwards.
  2. 3. Short stiff hair.
  3. 8. The long distance movement of animals to escape from harsh climate conditions.
  4. 9. Replacement of old worn out skin.
  5. 10. The back legs of mammals.
  6. 11. A network of air tubes in insects.
  7. 12. A body movement by the use of scales.
Down
  1. 1. Deep winter sleep in cold weather.
  2. 2. Dome shaped muscle.
  3. 4. Breathing holes in an insect's body.
  4. 5. Aquatic mammal.
  5. 6. A special mouth part in bees and butterflies.
  6. 7. Breathing structure in a fish.