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

The following that are true with regard to fold mountains are they often act as climatic barriers, they receive heavy rain or snow which give rise to rivers and they are rich in minerals. Fold mountains are mountains that form mainly by the effects of folding on layers within the upper part of the Earth's crust.