What determines if you are alive?

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Across
  1. 2. relocate from one place to another
  2. 4. achieve a permanent change in size
  3. 5. maintain a constant internal environment
  4. 6. produce offspring
  5. 7. respond to changes in the environment which enables survival of the organism
Down
  1. 1. get rid of wastes produced by chemical reactions in cells
  2. 3. obtain nutrients by feeding or making food
  3. 6. break down glucose to release energy