Question

Descent of water in the bed of a river​

Answer 1

Answer:

The abrupt drop in a river bed causes a waterfall. River water normally flows from higher area to a lower area. The terrain through which the river flows may be uneven with sudden sharp drop in the level, causing water to flow down such steep drop, with force. This causes waterfalls.

Answer 2

Explanation:

your answer is that as the law of water that it equalises according to the surrounding and therefore it moves from high area to lower area it is because of this that causes the formation the waterfall,river ,seas,etc.