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61.

Contour binding is done to check:

A.	Rill erosion	B.	Gully erosion
C.	Ravine formation	D.	Sheeterision

62.

The soil binding is done in the best way by:

A.	Algae	B.	Mycorrhizae
C.	Grasses	D.	All of these

63.

When trees and shrubs are planted in long orws along streams, they are described as:

A.	Wind breaks	B.	Soil binders
C.	Shelter belts	D.	Basin blisters

64.

Digging pits on the slopes just for the accumulation of run off is called as:

A.	Contour terracing	B.	Contour trenching
C.	Beach terrasing

65.

Terracing is done in:

A.	Desert areas	B.	Hilly areas
C.	Dry areas	D.	Plain areas