Gravel layer 64. Rooting zone layer. A layer containing drainage pipes. Dense clay layer. Fill-in each space below with the correct word or words.
Correct answers are in red .
Where more than one answer is acceptable, the additional correct answers are in blue . Rocks that form from the cooling and solidification of molten magma are called igneous rocks. A soil series consists of soils that have similar horizons in their profile and is the most detailed category in U.S. Soil Taxonomy. A soil survey is the systematic examination, description, classification and mapping of the soils in an area. The wearing away of soils and rocks at the land surface by water, wind, ice, and gravity is called erosion .