Litawn's vital functions/scientific methods

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Across
  1. 3. living things can get bigger, and _____.
  2. 5. take out.
  3. 7. when a living thing can make a copy of itself.
  4. 9. a variable we want to keep the same in an experiment.
  5. 12. livings need air, so they ______.
  6. 14. the light from the sun.
  7. 15. plants grow from these small things.
Down
  1. 1. the sound of lightning
  2. 2. clouds and living things can ______.
  3. 4. a large animal. we can drink her milk.
  4. 6. a word that we use to describe （描述） something.
  5. 8. living things need to go to the bathroom (kind of) to do this
  6. 10. the opposite of absorb
  7. 11. 反应
  8. 13. 吸收