Uses of Soil

1. decayed organic material that is one part of soil
3. this soil can also be called gravel
8. the horizon of soil that contains only a little humus
9. all of layers of soil taken as a whole
11. a natural resource that is made up of minerals, small rocks and organic matter
13. one of these can protect a field from wind
15. soil that has been carried from some other location
16. minerals that organisms need to live
18. unprotected soil is vulnerable to this
19. the most nutrient rich horizon of soil

2. another name for a windbreak
4. food grown on farms
5. this plant's roots can hold soil in place
6. a layer of soil is called this
7. this forms from bedrock in the ground
10. this soil has very small, tightly-packed mineral particles
12. the technique of planting different crops each year on a particular field to conserve nutrients
14. this soil has medium-sized hard particles
17. what the 4th soil horizon is made of