6.Science and Nature

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Across
  1. 3. Element in Earth's atmosphere.
  2. 4. Earth's structure study.
  3. 9. Carnivorous hunter.
  4. 10. Sun's visible surface.
  5. 11. Molten rock eruption.
  6. 13. Inheritance study.
  7. 17. CO2 gas.
  8. 20. Uncharged atomic particle.
  9. 21. Powerful tropical cyclone.
  10. 23. Ecosystem study.
  11. 24. Seasonal animal movement.
  12. 27. Disorder increase principle.
  13. 28. Pine or fir tree.
  14. 29. Pollutant precipitation.
  15. 31. Passing traits from parents.
  16. 33. Violently rotating wind funnel.
  17. 34. Ocean-dwelling flower.
  18. 35. Element's identifier.
  19. 39. Microscopic infectious agent.
  20. 41. Interconnected living environment.
  21. 43. Microscopic single-celled organisms.
  22. 44. Cell's specialized unit.
  23. 45. Air envelope around Earth.
  24. 48. Green plant pigment.
  25. 50. Variety of species.
  26. 52. Metal oxidation.
  27. 54. Supercontinent.
  28. 56. Darwin's survival principle.
  29. 58. Gas to liquid change.
  30. 60. Caterpillar to butterfly change.
  31. 61. Meat-eating animal.
  32. 62. Study of celestial bodies.
  33. 63. Space cloud of gas and dust.
  34. 64. Water-based environment.
Down
  1. 1. Object's resistance to change.
  2. 2. Exploding star.
  3. 5. Flowing charge.
  4. 6. Sunlight-powered plant process.
  5. 7. Study of matter and energy.
  6. 8. Space rock.
  7. 12. Essential gas for life.
  8. 14. Large tusked mammal.
  9. 15. Atom's pull on electrons.
  10. 16. Attraction and repulsion force.
  11. 18. Pouched mammal.
  12. 19. Immunity-building shot.
  13. 22. Chemical responsiveness.
  14. 25. Plant fertilization process.
  15. 26. Water-to-land vertebrate.
  16. 30. Earthquake strength measure.
  17. 32. Ground-shaking event.
  18. 36. Acid-base reaction balance.
  19. 37. Basic atomic substance.
  20. 38. Milky Way is one.
  21. 40. Plant water transport tissue.
  22. 42. Close species interaction.
  23. 46. Cell division process.
  24. 47. Organism multiplication.
  25. 49. Plant-eating animal.
  26. 51. Living entity.
  27. 52. Tropical storm system.
  28. 53. Smallest compound unit.
  29. 55. Molds and mushrooms.
  30. 57. Light in deep-sea creatures.
  31. 59. Star system group.