branches of biology

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Across
  1. 3. the study of relationship between biotic and abiotic things
  2. 7. the study of fish
  3. 9. the study of tissue
  4. 10. the study of cell
  5. 11. the science of naming,grouping and classifying
  6. 12. the study of disease of plants and animals
  7. 13. taxonomy is also called
  8. 15. the study of virus
  9. 16. the study of plants
  10. 17. the study of gross structure
Down
  1. 1. the study of birds
  2. 2. the study of chemical and reaction that takes place inside living thing
  3. 4. the science of the transmission of body characteristics from parent off sping
  4. 5. the study of bacteria
  5. 6. the study of animal
  6. 8. the study of fungi
  7. 14. the study of origin and descent of organism