Assertion (A): G.K. Gilbert’s geomorphic theory emphasizes dynamic equilibrium between erosional processes and landform development.
Reason (R): According to Gilbert, landscapes evolve through a sequential cycle of youth, maturity, and old age controlled primarily by time.
Choose the correct answer:
Both A and R are true, but R is not the correct explanation of A.
A is false, but R is true.
Both A and R are true, and R is the correct explanation of A.
A is true, but R is false.
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