Loss of farmland can be contributed to all the following except?

A. sedimentation

B. leaching

C. desertification

D. sheet erosion

E. over-grazing

The term gauge in railway transport refers to the?

A. weight of vehicle that rails can bear

B. measurement of gradient along the side slopes of the rails

C. length of the rails in a country

D. distance between rails of a track

E. amount of rainfall experienced along the rails