How does the C horizon form?
Rainwater washes clay minerals from the A horizon to the C horizon
Plant roots weather pieces of rock
plants add organic material to the soil
bedrock weathers, and breaks up into soil particles.**
What makes up soil besides rock particles, minerals, air, and water?
Color and chemistry
texture and pore space
decayed organic matter**
oil
A geologist is studying a layer of soil in the Sahara. The soil layer contains little humus but a lot of clay and other rock particles. Which soil layer is it?
A horizon
B horizon**
C horizon
bedrock
Yes, the answers to this entire quick check were
1.A
2.D
3.C
4.B