Branches of Pure Science

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Across
  1. 2. the history and structure of the earth
  2. 3. the composition and changes of matter
  3. 6. the interaction between matter and energy
  4. 8. the study of rocks and minerals
  5. 10. the study of earthquakes
  6. 12. the study of plants
  7. 16. the studies of physical and biological aspects of oceans
  8. 18. the study of organism in their natural habitats
  9. 19. studies earth’s weather and atmosphere
  10. 20. the study of animals
Down
  1. 1. the study of composition of soil
  2. 4. the study of poisons and its antidotes
  3. 5. the study of heavenly bodies
  4. 7. the study of skin, hair, nails and scalp
  5. 9. the study of neurons or brain cells
  6. 11. the study of parts and diseases about heart
  7. 13. the study of number and its operations
  8. 14. the study the positions of celestial bodies relating to influence on human fate
  9. 15. the study of radiation like x-rays
  10. 17. the study of flight of airplanes