Staying Alive

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Across
  1. 2. The heart pumps this around the body.
  2. 4. What you do when air goes in and out of your lungs.
  3. 5. Animals that live on land and in water.
  4. 10. Young stage of a frog living in water.
  5. 11. The heart is a strong _____.
  6. 12. The speed of breathing or heartbeat.
  7. 13. Cold-blooded animals with scales.
  8. 15. Animals with six legs and three body parts.
  9. 17. Where food goes first after you eat.
  10. 19. The organ that helps you think and remember.
  11. 20. Organs that help you breathe.
Down
  1. 1. Animals with feathers and wings.
  2. 3. Changes an animal goes through as it grows.
  3. 6. A fully grown animal or person.
  4. 7. A young frog with legs and a small tail.
  5. 8. Warm-blooded animals that have babies.
  6. 9. Gas from the air that moves into your blood.
  7. 14. Where nutrients are taken from food.
  8. 16. A very young human.
  9. 18. Parts of the body that do important jobs.