How will the processes of weathering, erosion, and deposition affect a mountain range?

It effects it because there's a possibility it can reduce the mountains to a smaller structure (breaking down), like a plateau, which would for sure leave a change in the landforms

As over the period of time the erosive factors becomes in abundance and they tend to wear and tear the mountain ranges and thus the deposition is affected.

Explanation:

The process of erosion stated from the top o the mountain range as the primary sources of the erosion the impact of the winds and the rays of the sun create an effect of the nature of the terrain and thus the mountain starts to wear out gradually from the top and slowly starts to melt. The water and winds force the ice on the ranges to move down and slowly with the impact of the gravity they tend to fall as can be seen in the periods of the avalanches as they are violent and string ice storms that result from the action of the wons and the falling snow. Hence the deposition of layers of snow and sediments is impacted by the rock debris, slide sand other matter that falls from above which includes the movement of the ice sheet s in regions of the glaciers and the action of the weathering is called as the denudation process.

D.haka is the first answer and a.canberra is the second answer