Layers , And Layers

3. the size, shape, and position of the particle of soil
4. the amount of open space between an object.
6. the ability to let water pass through.
7. the expansion of desert conditions in an area where the natural plant cover has been destroyed.
10. the make up of rock or soil describing the minerals or elements present in it.
11. the process by which natural forces break down rocks and soil
12. weathering break down or decomposition of rock that takes place when minerals change through chemical process
13. a chemical reaction in which an element combines with oxygen to form an oxide; iron oxide=rust
15. the decaying of organic matter in soil.
17. the process by which rainwater dissolves and carries away minerals and nutrients in the top soil.
18. horizon a soil layer with physical and chemical properties that differ from those of soil layers above or below it.

1. the process in which transported sediment is laid down
2. the process in which layers of sheets of rock gradually break off
5. the breakdown of rock into smaller pieces of the same material without any change to its composition
8. the process in which sediment is picked up and moved from one place to another
9. soil the top layer of soil that contains humus.
14. the process of wearing something down by friction.
16. layer of rock beneath the soil.