Plunge pool or waterfall lake is a deep depression in the stream bed at the base of the waterfall. It is created by the erosional force of the cascading water. They occur at the youthful stage of the river development.
Albedo is the proportion of insolation that is reflected back by the surface. It depends upon the nature of the surface upon which the solar radiation is incident and the angle of incidence of the solar beam.
EXAMIANS