ENVIRONMENTAL SCIENCE

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Across
  1. 3. / Variety of life forms in a particular habitat
  2. 8. / Essential element in DNA and energy transfer (ATP)
  3. 9. / Yellow nonmetal used in proteins
  4. 10. / Smallest unit of a chemical element
  5. 12. / Drink this daily
  6. 14. / Force applied over a distance
  7. 15. / All the waters on Earth’s surface
  8. 16. / Capacity to do work
  9. 17. / Earth's outer shell, including crust and upper mantle
  10. 19. / Gas essential for respiration
  11. 21. / Process by which plants convert light into food
  12. 22. / Region of Earth that supports life
  13. 24. / An explanation based on evidence that can be tested by observation or experimentation.
  14. 27. / SI base unit of mass
  15. 28. / It means "Knowledge"
  16. 31. / Study of human society and social relationships
Down
  1. 1. / SI unit for temperature
  2. 2. / Breakdown of rocks by wind, water, or organisms
  3. 4. / The layer of gases surrounding Earth
  4. 5. / Water that flows over land into bodies of water
  5. 6. / A well-substantiated explanation of natural phenomena
  6. 7. / Key element in all organic life
  7. 11. / The study of interactions between life and its physical environment.
  8. 13. / Study of heat and energy transfer
  9. 18. / The SI base unit of electrical current.
  10. 20. / Process of converting ammonia to nitrates
  11. 23. / Particles of light
  12. 25. / Gas that makes up 78% of Earth’s atmosphere
  13. 26. / SI unit for luminous intensity
  14. 29. / SI unit for amount of substance
  15. 30. / SI unit of energy