The ecological equilibrium in mined areas can be achieved by:
A.Preventing soil erosion
B.Developing a vegetational cover
C.Preventing overgrazing
D.Introducing agriculture
A.Preventing soil erosion
B.Developing a vegetational cover
C.Preventing overgrazing
D.Introducing agriculture
A.Rill erosion
B.Gully erosion
C.Ravine formation
D.Sheeterision
A.Contour terracing
B.Contour strip cropping
C.Confour farming
D.All of these
A.Pans
B.Peds
C.Clods
D.None of these
A.Rill erosion
B.Gully erosion
C.Sheet erosion
D.All of these
A.The roots are starved
B.Of the mechanical injury to roots
C.Most of the aerial parts are eaten away
D.All of the above
A.Gully erosion
B.Slip erosion
C.Wind erosion
D.Stream bank erosion
A.Increasing fertility of soil
B.Increasing quality of protein
C.Getting different kinds of crops
D.Increasing quality of minerals
A.Aeration and hydration
B.Humus and mineral contents
C.Humus, mineral and hydration level
D.All of these
A.Deforestation
B.Heavy rains
C.Afforestation
D.Over grazing