question_answer

                                                                                  What are Plains? How are they formed?                                                                                                    

Answer:

(a) Plains are large stretches of flat land. They are, generally, not more than 200 metres above the mean sea level.

(b) Most of the plains are formed by rivers and their tributaries.

(i) The rivers flow down the slopes of mountains and erode them. They carry forward the eroded materials.

(ii) Then they deposit their loads consisting of stones, sand and silt along their courses and in their valleys.

(iii) From these deposits, plains are formed.