Chapter 1

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Across
  1. 3. studies internal and external structures and the relationships between them
  2. 6. existence of a relatively stable internal environment
  3. 7. studies the general form and superficial markings
Down
  1. 1. breaks large molecules into small molecules
  2. 2. all of the chemical reactions that occur in a cell or organism
  3. 4. response opposes the initial stimulus
  4. 5. studies how living organisms perform the vital functions