Soil Formation

Edit Answers
1234567891011121314
Across
  1. 6. activity,Ash and lava add nutrients to soil.
  2. 7. weathering,Rocks change through chemical reactions
  3. 9. Soil creatures that mix and aerate the soil through their tunnels.
  4. 10. The brown or black substance that binds soil particles together.
  5. 11. Land shape affects erosion, drainage, and organic buildup.
  6. 14. Temperature and rainfall control weathering and organic decay rates.
Down
  1. 1. Organism, Earthworms, fungi, and bacteria improve soil by aerating it, aiding drainage, and making humus.
  2. 2. Organism,Plants, animals, and microbes break down rocks and create humus.
  3. 3. and animals, Dead plants and animals form humus, improving soil texture and providing nutrients
  4. 4. Soil forms very slowly over thousands of years.
  5. 5. weathering,Rocks break down without changing composition
  6. 8. ,Island group where volcanic soils are common (e.g., St. Vincent, Dominica).
  7. 12. activity,Land clearing, mining, and ploughing affect soil formation and fertility by disturbing topsoil and organisms.
  8. 13. Material,The rock or mineral source from which soil forms; affects texture and fertility.