As waves approach the shore, interaction with the sea floor slows the waves down and the crests of the waves bunch up. They increase in height as the energy in each wave compresses into a shorter horizontal distance, but the period of the wave does not change. Eventually, the waves break.
Along cold water currents from the poles to the equator.
Mr poppins is coming
evaporation
Zone of saturation
delta
watershed
The alluvial silt that covers the land during flooding increases its fertility. This is in addition to the ready supply of fresh water required for any large societal group.
Marsh
littoral
A swamp is a wetland that has trees and brushes.