According to one estimate, wind and water erosion over ______ % of the Pakistan’s total area?

A. Top dressing
B. Broad casting
C. both A and B
D. Basal placement

A. All the covalent bonds
B. Zero charge at surface
C. All are ionic bond
D. None of the above

A. Granulation
B. Texture
C. Flocculation
D. Structure