The predominant action at the upper course of a river is
saltation
transportation
deposition
corrosion
corrasion
Correct answer is E
No explanation has been provided for this answer.
The seasonal variation in the volume of water in a river is known as its
direction
load
velocity
system
regime
Correct answer is E
No explanation has been provided for this answer.
Yardangs are best described as
long narrow ridges of sand lying parallel to the direction of the prevailing winds
steep-side vertical bands of alternate hard and soft rocks aligned in the dircetion of the prevailing winds
flat, table-like masses with very resistant horizontal top layers and very steep sides
tabular, horizontal strata of alternate hard and soft rocks sculptured into a ridge and furrow landscape by wind
hills of sand formed by the accumulation of sand and shaped by the movement of winds
Correct answer is B
No explanation has been provided for this answer.
Crater lakes are most likely to occur in
areas of active erosion
regions where subsidence is taking place
regions of extinct volcanoes
heavily faulted regions
areas of fold mountains
Correct answer is C
No explanation has been provided for this answer.
plutonic igneous rock
volcanic igneous rock
organically formed sedimentary rock
mechanically formed sedimentary rock
metarmorphic rock
Correct answer is D
No explanation has been provided for this answer.