Across
- 2. - seen as a villain of science
- 4. - main driving factor of the oxygen cycle
- 5. - tested to show if it is correct or find where it is wrong
- 8. - a substance with constant composition
- 9. - fall between metals and non-metals
- 12. - study of animal life
- 14. - when a theory becomes a fact and can be satisfactorily explained
- 16. - an essential nutrient for plants and animals in the form of ions
- 18. - process that converts nitrogen to nitrogen gas
- 20. - are aldehydes or ketones that function as a source of energy
- 23. - anything that occupies space and has mass
- 24. - substances that contain 2 or more elements
- 27. - study of the atmosphere, weather, and climate
- 28. - ionic compound of cations and anions
- 29. - science that deals with natural objects
- 31. - include environmental geology and evolution of Earth's crust
- 33. - one of the most natural hazard-prone countries in the world
- 34. - are essential in building of tissues
- 37. - rise in temperature that the Earth experiences
- 39. - the person who popularized the carbon cycle
- 40. - it is the testing of hypothesis
Down
- 1. - substances that are soluble in nonpolar solvents and insoluble in polar solvents
- 3. - another term for biogeochemical cycles
- 6. - tenth most abundant element in the universe
- 7. - deals with abstractions rather than observables
- 10. - concerned with production, distribution, and consumption
- 11. - study of life
- 13. - study of interactions between life
- 15. - deals with all the celestial objects in the universe
- 17. - body of knowledge
- 19. - can conduct electricity and heat
- 21. - smallest unit of matter
- 22. - focused on plant life
- 25. - the most abundant element in Earth's atmosphere
- 26. - has a bitter taste and can change red litmus paper to blue
- 30. - has a sour taste and can change blue litmus paper to red
- 32. - aldehydes and ketones with multiple hydroxide group
- 35. - can be converted, but not created or destroyed
- 36. - tasteless, colorless, and odorless liquid
- 38. - any form of precipitation with acidic components