Nutrition in plants

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Across
  1. 4. obtain food from their host.
  2. 6. digests the insects.
  3. 8. the main element in proteins.
  4. 9. is the mutually beneficial relatioship.
Down
  1. 1. are heterotrophs.
  2. 2. make food for themselves.
  3. 3. plants eat insects by ingenious methods.
  4. 5. converts atmospheric nitrogen to water soluble.
  5. 7. are tiny pores under the leaves.