Living things,classification

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Across
  1. 3. process by which living things take in oxygen and release carbon dioxide. (11 letters)
  2. 4. that exhibit growth, reproduction, and response to stimuli. (6 letters)
  3. 5. for life processes and needed by living things to perform them. (5 letters)
  4. 6. that do not exhibit growth, reproduction, or response to stimuli. (9 letters)
Down
  1. 1. in the environment that elicit a response from living things. (7 letters)
  2. 2. process by which green plants make their own food using sunlight. (14 letters)
  3. 7. characteristic showing that something is living and capable of development. (6 letters)