Across
- 2. on planet Earth.
- 6. the protective blanket of gases
- 8. Cultural element
- 10. element
- 13. comprises all types of water resources.
- 15. a substance that starts a chemical reaction
- 19. Where life
- 21. reactions in an organism
- 22. is the smallest
- 24. is the ability to do work
- 26. is a common chemical
- 27. KNOWLEDGE
- 28. breathed in. enters the blood from the lungs and travels to the tissues.
- 29. is the removal of soluble material from a substance, such as soil or rock, through the percolation of water.
- 31. the concentration of
- 33. occurs when there is more water than land can absorb.
- 34. consists of two or more
- 35. a substance that forms as a result of a chemical reaction
- 36. is the outer mantle
- 38. is the breaking down or dissolving of rocks and minerals on Earth’s surface.
Down
- 1. the sum of all the
- 3. Is a pure substance
- 4. is a substance
- 5. and has mass.
- 7. occurs as a gas which makes up 78 percent of the atmosphere and that forms a part of all living tissues
- 9. the solid earth.
- 11. highly flammable diatomic gas.
- 12. Biological element
- 14. the state of one who lacks a usual or socially acceptable amount of money or material possessions
- 16. is the main element in organic compounds
- 17. has the properties of
- 18. the chemical element of atomic number 16
- 19. One of the environmental issue
- 20. is the study of energy
- 23. of an element that
- 25. is defined as ametabolic process wherein, the living cells of an organism obtains energy
- 30. is done when force is applied to
- 31. object over a distance
- 32. is anything that takes up
- 37. ions in a solution