How does sedimentation occurs?

On a mountainside.

All the river carries certain amount of silt eroded from the catchment area during heavy rains and deposition of the silt takes place it is called as sedimentation.

All Particles move using their kinetic energy. Diffusion occurs because of difference in concentrations. The higher the concentration gradient the faster the diffusion rate. When diffusion happens it...

in the pacific. because they chose to occur there

in super-celled thunderstorms or for the right conditions. All it is a wing current that spins around very fast.