The Ologies part 2

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Across
  1. 3. zoology- Study of animals without a backbone
  2. 5. biology- Study of life in the ocean
  3. 7. The study of freshwater systems
  4. 8. Geology- Study of the geologic features of the ocean floor
  5. 11. study of worms
  6. 13. Study of fish
  7. 14. Study of the immune system
  8. 15. Science dealing with the atmosphere
Down
  1. 1. Study of heredity and inherited traits passed down from generation to generation
  2. 2. Study of the blood and blood diseases
  3. 4. Study of mammals
  4. 6. Study of reptiles
  5. 9. Study of nature
  6. 10. Study of the incidence
  7. 12. Study of water on earth