1.

Various landforms observed on the surface of the earth are due to the:1. differences in the type and structure of the crustal material2. differences in the land forming processes3. differential rates of the processes at different places on the Earth's surfaceSelect the correct answer using the code given below :

A. 1 only
B. 1 and 2 only
C. 2 and 3 only
D. 1, 2 and 3
Answer» E.


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