Chapter 6, Lesson 2 Flashcards
1
Q
A layer of soil that is different from the layers above it and below it
A
Horizon
2
Q
A view of the different horizons in a soil, from the surface down to the bedrock
A
Soil profile
3
Q
The dark top layer of soil, rich in humus and minerals
A
Topsoil
4
Q
A hard layer of clay and minerals beneath topsoil in which many organisms live and grow
A
Subsoil
5
Q
The space between particles of soil
A
Pore spaces
6
Q
Having pore spaces through which air and water can pass
A
Porous
7
Q
A measure of how fast water can pass through a porous material
A
Permeability
8
Q
Decayed plant and animal matter in soil
A
Humus
