Question

how is a waterfall formed ???​

Answer 1

Answer:

Often, waterfalls form as streams flow from soft rock to hard rock. This happens both laterally (as a stream flows across the earth) and vertically (as the stream drops in a waterfall). In both cases, the soft rock erodes, leaving a hard ledge over which the stream falls.

Explanation:

I HOPE IT HELPS YOU SIS

Answer 2

Answer:

when the soft rock erodes, leaving a hard ledge over which the stream falls.