16.
Sedimentary rocks are formed by the process of ________

17.
Which type of lakes are created by the volcanic activities?

18.
Which of the following are true with regard to fold mountains?
I. They often act as climatic barriers
II. They receive heavy rain or snow which give rise to rivers
III. They are rich in minerals
IV. They pose no problem, to communication as they contain many passes

19.
Which of the following rocks is transformed into marble?

20.
Hanging Valley is very common in

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