MR.GREN

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Across
  1. 2. Produce young like themselves
  2. 5. Escspe from danger
  3. 6. Obtain energy and materials
  4. 7. Increase size to become adults
Down
  1. 1. Get rid of waste from the body
  2. 3. Detect changes from their surroundings
  3. 4. Release energy from food