Erosion.
weathering breaks down rocks, which makes the sediment easy to be transported
It makes them gradually smaller.
At the coast, e.g Coasts of England. The strong waves destroy rocks over time. Because of this beaches became smaller and smaller
Height differences at the surface are eventually flattened. The pieces get smaller and smaller until water and wind carry them away. Eventually they may become sedimentary rock.
The process where bits of rock in streams get smaller and rounder is a form of erosion. The force of the water going across the rocks forms the shapes of the rocks and slowly makes them smaller.
erosion
Erosion breaks rocks down into smaller particles.
Weathering and erosion breaks rocks into smaller pieces.
Erosion.
Erosion
Weathering breakdown of rocks into smaller pieces sediments results in the formation sedimentary rocks.
erosion
Erosion and weathering is what makes any canyon smaller, and it also starts canyons.
it makes them smaller.
It makes it smaller
Weathering breaks materialn down and erosion transports that broken down material. As an example, weathering breaks a mountain down into smaller rocks, and those smaller rocks can be transported by streams (erosion), but the streams cannot simply move the whole mountain.