Across
- 6. natural objects and natural phenomena
- 8. ex. silicon, boron, arsenic
- 9. identification of minerals
- 10. interactions among physical, chemical and biological components of the environment
- 11. focuses on the earth's atmosphere
- 12. author and advocate for wilderness
- 18. natural occurences that happen in our ecosystem
- 21. contain two or more elements
- 25. essential nutrient for plant
- 27. study of life
- 28. plant life
- 31. 10th most abundant element in the universe
- 35. NaCl
- 36. energy of electromagnetic waves
- 37. weather
- 38. with constant composition
- 39. study of earth
- 40. ex. gold, silver, zinc
Down
- 1. evaporation,condensation and precipitation
- 2. 78% of the athmosphere
- 3. energy in the nucleus or core of an atom
- 4. brings damage to the lakes, soils, forest and building
- 5. study of man
- 7. bacteria and diseases
- 13. possessed by an object due to its motion or due to its position
- 14. animal life
- 15. collecting facts and data by the observation of natural phenomena
- 16. proved polluted water causes cholera
- 17. transform light energy to chemical energy
- 19. first discovered by Joseph Priestly
- 20. interactions between life and its physical environment
- 22. individual behavior and mind
- 23. balance of the exchanges
- 24. mass and occupies space
- 26. dangerous trade
- 29. production, distribution, and socumption of goods and services
- 30. fought for public rights and against water pollution
- 31. increasingly affected by industrial air pollution
- 32. microorganisns
- 33. origin and constitution of society
- 34. capacity to do work