Aridisols cover the largest in Pakistan_______?
Aridisols cover the largest in Pakistan_______?
A. 259,710 km2
B. 269,810 km2
C. 278,910 km2
D. None of these
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_________ erosion is the removal of a thin layer of soil by water acting over the whole surface. This type of erosion damaged very fertile lands located on slopes, some of which have been eroded to a depth of about 15 cm.
_________ erosion is the removal of a thin layer of soil by water acting over the whole surface. This type of erosion damaged very fertile lands located on slopes, some of which have been eroded to a depth of about 15 cm.A. Rain splash rill erosion
B. Stream bank erosion
C. Sheet erosion
D. Gully erosionConservation agriculture improves the water use efficiency of dryland systems. It has components:
Conservation agriculture improves the water use efficiency of dryland systems. It has components:A. Reduced soil disturbance through no-till or minimum till
B. Residue return to keep at least 30% of soil covered
C. Crop rotations for better utilization of available water & nutrients
D. all of the aboveWhat is the concentration of pure water?
What is the concentration of pure water?A. 55.5 mol/L
B. 45.5 mol/L
C. Both a and b
D. none of theseSoil pores created by the animal such as earthworm and plant root are called_________?
Soil pores created by the animal such as earthworm and plant root are called_________?A. Biopores
B. Diameter
C. Mesopores
D. MicrosporesHow many different minerals deposits are found in Pakistan ?
How many different minerals deposits are found in Pakistan ?A. 100
B. 60
C. 30
D. None of the aboveVolcanic soils:
Volcanic soils:A. Aridisols
B. Gelisols
C. Endsols
D. None of the above