Formation of a rift valley is due to : – McqOptions

MCQOPTIONS

1.	Formation of a rift valley is due to :
A.	the formation of fold mountains
B.	the forces of tension in the earth's crust
C.	the subsidence of the floor of a river valley
D.	the over-deepening of a valley by ice action
Answer» C. the subsidence of the floor of a river valley

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