Erosion is the movement of particulate from Point A to Point B by way of wind or water movement.
Deposition is the final resting place of the same particulates at Point B, having moved from Point A. That is, they are deposited at Point B.
The location of Point B is primarily a function of the wind/water velocity and the size of the particle. At a given flow of velocity, bigger heavier particles are deposited first, while smaller and light particles move much further. This is the reason that flood plains are normally clay dominant, given clay is the smallest primary particle of soil (particles: sand>slit>clay).
A: Erosion is more likely to occur on slopes that are longer, steeper, and have smoother surfaces. The slope parameters and rainfall amount together affect the flow speed. There is a larger chance of erosion and sedimentation the quicker the water runs.
B: Mountains may gradually lose their form due to erosion, which is influenced by the flow of water and wind. On the other hand, deposition deposits and/or leaves deposition behind. This may also alter landforms, although deposition builds up surfaces rather than tearing them down.
C: Erosion and deposition are caused by water moving across the Earth's surface or beneath. A steeper slope's water flow travels more quickly and erodes more quickly. The size of the particle affects how it is transported by water.
D: Rapider water flow accelerates erosion. More slowly flowing water erodes materials. The silt being carried may settle out and be repositioned if the water is flowing slowly enough.
E: The water flow, which carries sediment downstream, contributes to the shaping of the planet's surface by transporting eroded material from one area and depositing it in another.
Thank you,
Eddie E.