What is a soil horizon?
What is a soil horizon?
A. Soil texture
B. Soil structure
C. Layers of soil
D. All of these
A. Soil texture
B. Soil structure
C. Layers of soil
D. All of these
A. Onsite damages
B. Offsite damages
C. Both A & B
D. None of the above
A. 40 mg of Ca
B. 46 mg of Na
C. 6 mg of Al
D. 12 mg of mg
A. Chemoautotroph
B. Photoautotroph
C. Saprophyte
D. None of these
A. Pakistan
B. Germany
C. Austria
D. Both a & b
A. Nitrogen
B. Potassium
C. Aluminium
D. Calcium
A. 20%
B. 10%
C. 5%
D. 15%