Since we have no idea what "this" might be, we can't answer the question properly.
If mountain glaciers disappear there will be no source for many mountain streams, which will then dry up. Many rivers will be reduced in size as a result.
From streams and rivers, rain puddles
knkn
Mountain streams and rivers of the eastern states.
How could each of these changes affect erosión and streams
Rivers and streams are the genesis of life in an ecosystem. Without these rivers and streams, the chain of life cannot be extended. All human and animal life and their derivatives depend on these bodies of water.
They reduce flow, and create a backpool which reduces flow downstream
Water is from snow packs, rivers, lakes, ponds, and streams.
Usually at the top of mountains, they start off as streams. Then the streams join together and get bigger, wider, and eventually they turn into rivers.
Clear mountain rivers and streams, mainly in the higher mountains.
Water is almost never stationary. As such, it flows continuously from one part of provinces to other parts. Pollution that is deposited in rivers or streams in one area could be carried downstream to other areas and affect their water quality.
Moving water causes valleys to have a V shape. In mountain ranges, rivers have steep gradients so their is no additional erosion to the mountain shape.