Biology

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Across
  1. 3. grouping of organisms according to their similarities
  2. 7. interaction living organisms with another and not living
  3. 9. some cross over with biochemistry
Down
  1. 1. the study of human beings
  2. 2. the study of microorganisms
  3. 3. the basic unit of life
  4. 4. the sum of all chemical reactions in living organisms
  5. 5. the study of plants
  6. 6. study of organisms's inner structure
  7. 8. the study of genes and heredity