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Across
  1. 3. - Study of mammals
  2. 6. zoology - Study of animals with backbones and everything about them.
  3. 9. - Science dealing with the atmosphere and weather
  4. 10. - Study of volcanoes and volcano-related phenomena
  5. 11. Biology - Study of life in the ocean
  6. 13. - Study of microscopic life forms
  7. 14. - Study of insects
  8. 15. - The study of all types of animals and everything about them
Down
  1. 1. - Study of organisms and how they interact with the environment, such as habitats and food web
  2. 2. Geology - Study of the geologic features of the ocean floor, including plate tectonics of the ocean
  3. 4. - Study of Earth's moon and its geology
  4. 5. - Study of viruses and viral diseases
  5. 7. - Study of development of living things before birth
  6. 8. - Study of hormones and their composition and function
  7. 12. - Study of earthquakes and seismic waves