The different ologies

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Across
  1. 3. study of bloods and blood diseases
  2. 8. study of heredity
  3. 9. the study of mites and ticks
  4. 10. study of the parasites
  5. 13. study of water
  6. 14. study of immune system
  7. 15. study of living things
Down
  1. 1. the branch of zoology concerned with mammals
  2. 2. study of fish
  3. 4. development of living things before birth
  4. 5. science dealing with atmosphere & weather
  5. 6. study of the nervous system
  6. 7. study of freshwater systems
  7. 11. everything beyond Earth's atmosphere
  8. 12. study of fungi and yeast