Which soil layer contains unique colours,and often iron,aluminums,humus,and clay leached from higher layers?
A) zone of leaching
B) topsoil
C) subsoil
D) parent material

Question

Which soil layer contains unique colours,and often iron,aluminums,humus,and clay leached from higher layers? 
A) zone of leaching 
B) topsoil 
C) subsoil 
D) parent material

Quizplus · Accepted Answer

The subsoil layer contains unique colors, often due to high amounts of iron, aluminum, humus, and clay that have been leached from higher layers. The zone of leaching is where these nutrients are being removed from the soil, while the topsoil layer is where organic matter accumulates and most plant growth occurs. The parent material layer is the underlying rock or sediment that the soil forms from.

Which Soil Layer Contains Unique Colours,and Often Iron,aluminums,humus,and Clay Leached