Question

how does rain help in the formation of soil

Answer 1

rain help in the formation of soil by following ways .
through the process of weathering the rock is breakdown into soil.

weathering is a process through which rock is break down by the action of water..

Answer 2

However, how well they represent soil status depends on the level of rainfall in the area. ... Changes in precipitation affect vegetation which has impacts on soil organic matter cycle and the texture of soil. This can influence the runoff rate and formation of surface crusts, which affect erosion and cause deterioration.