Complete the following puzzle using the clues given below

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Across
  1. 5. Producing offspring
  2. 7. Detecting changes in the environment and responding
  3. 8. Enlarging in size or changing life stages
Down
  1. 1. Releasing energy from food
  2. 2. Moving part of or the whole of the body
  3. 3. Moving materials around the body
  4. 4. Producing or consuming food
  5. 6. Disposing of waste chemicals