Answer: The endogenic and exogenic forces causing physical stresses and chemical actions on earth materials and bringing about changes in the configuration of the surface of the earth are known as geomorphic processes. While, diastrophism and volcanism are endogenic geomorphic processes, weathering, mass wasting, erosion and deposition are exogenic geomorphic processes. The differences between the two processes are as follows:

Significance of Weathering: Weathering is the action of elements of weather and climate over the earth’s materials. There are a number of processes within weathering that act either individually or together to affect the earth’s materials in order to reduce them to a fragmental state.

• Weathering processes are responsible for breaking down the rocks into smaller fragments and preparing the way for the formation of not only regolith and soils but also erosion and mass movements.
• Weathering is an important process in the formation of soils. Biodiversity depends upon vegetation, which in turn, is dependent upon the depth of weathering mantles.
• Weathering aids mass wasting, erosion, and reduction of relief. Also, changes in landforms are a consequence of erosion.
• Weathering of rocks and deposits helps in the enrichment and concentrations of certain valuable ores of iron, manganese, aluminum, copper, etc., which are of great importance to the national economy.
• Weathering processes are conditioned by many complex geological, climatic, topographic and vegetative factors.