1. soil

2. the top layer of the earth’s surface, consisting of rock and mineral particles mixed with organic matter

3. organic

4. of, relating to, or derived from living organisms

5. inorganic

6. Involving neither living organisms or products of living organisms

7. humidity

8. dampness, especially of the air

9. weather

10. The state of the atmosphere at a given time and place, with respect to variables such as temperature, moisture, wind velocity, and barometric pressure.

11. temperature

12. The degree of hotness or coldness of a body or environment.

13. organisms

14. an individual form of life

15. humus

16. Nonliving, finely divided organic matter in soil, derived from microbial decomposition of plant and animal substances

17. decomposition

18. The act or result of disintegration

19. decompose

20. To separate into components or basic elements.
To become broken down into components; disintegrate.
To cause to rot.
To decay

21. vegetation

22. The plants of an area or a region; plant life

23. nutrients

24. source of nourishment

25. absorption

26. The act or process of taking something in

27. compost

28. A mixture of decaying organic matter, as from leaves and manure, used to improve soil structure and provide nutrients.

29. vermicompost

30. is the product or process of composting utilizing various species of worms, specifically red wigglers, white worms, and earthworms

31. bacteria

32. Group of microscopic, single-celled organisms that inhabit virtually all environments, including soil, water, organic matter, and the bodies of multicellular animals.

33. microbes

34. A minute life form

35. thermophiles

36. An organism that thrives at high temperatures

37. topsoil

38. The upper part of the soil

39. weathering

40. Any of the chemical or mechanical processes by which rocks exposed to the weather undergo changes in character and break down.

41. particles

42. A very small piece or part; a tiny portion or speck.

43. eroded

44. To wear (something) away by or as if by abrasion: Waves eroded the shore.

45. cultivation

46. Loosening and breaking up (tilling) of the soil.

47. rocks

48. Relatively hard, naturally formed mineral or petrified matter; stone

49. minerals

50. inorganic nutrients

51. clay

52. A fine-grained, firm earthy material that is plastic when wet and hardens when heated

53. silt

54. A sedimentary material consisting of very fine particles intermediate in size between sand and clay.

55. sediment

56. Material that settles to the bottom of a liquid; lees.
Solid fragments of inorganic or organic material that come from the weathering of rock and are carried and deposited by wind, water, or ice.

57. sieves

58. sifts

59. sand

60. Small loose grains of worn or disintegrated rock.

61. gravel

62. An unconsolidated mixture of rock fragments or pebbles.

63. pebbles

64. usually balls of hard flint or hard burned white porcelain.

65. loams

66. a rich soil consisting of a mixture of sand and clay and decaying organic materials

67. percolation

68. the slow passage of a liquid through a filtering medium; "the percolation of rainwater through the soil"

69. red wigglers

70. the most common type of composting worm