1. Which of the following is NOT a primary mineral?
A. Mica
B. Feldspar
C. Quartz
D. Limestone
2. Which soil texture allows water to move through soil most quickly?
A. Sand
B. Loam
C. Clay
D. Silt
3. Which of the following is NOT used to classify soils?
A. Depth
B. Texture
C. Color
D. Structure
4.Which horizon is known as top soil?
A.E horizon
B. O horizon
C. A horizon
D. B horizon