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Across
  1. 2. - Study of fish
  2. 3. - Study of heredity & inherited traits passed down from generation to generation
  3. 6. - Study of reptiles and amphibians
  4. 7. - Study of cell biology including cell anatomy and physiology
  5. 9. - Study of the properties of matter and how matter changes into new substances
  6. 11. - Study of the blood and blood diseases
  7. 12. - Study of water on earth
  8. 14. - Study of the immune system and its responses to invading pathogens
  9. 15. - Study of the bones and the disorders and diseases of the skeletal system
Down
  1. 1. - Study of organisms and how they interact with the environment, such as habitats and food web
  2. 4. - A person who studies the different climates.
  3. 5. - Study of nerves; also a branch of medicine dealing with diseases of the nervous system
  4. 8. - Study of the nature, formation, and movement of glaciers
  5. 10. - Study of development of living things before birth
  6. 13. - Study of worms, particularly parasite forms such as tapeworms