What do these curved ridges (eskers) suggest happened on the landscape?
A) Ancient shorelines were present.
B) Meltwater channels were below or within a glacier.
C) Soft glacial sediment was shaped by the moving glacier.
D) Glacially derived, wind-blown dust was abundant.
B) Meltwater channels were below or within a glacier.
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What will be an ideal response?
The subtropical jet stream is stronger than the polar jet stream
Indicate whether the statement is true or false
As human populations have spread over the globe, the species extinction rate has
A. increased rapidly. B. remained equal to the species formation rate. C. decreased by about one species per year. D. decreased to historically low levels. E. remained unchanged.
The direct collision of a raindrop with the ground, laterally shifting fine particles a few millimeters, is ______.
a - splash erosion b - valley cutting c - rill formation d - peds pushing e - plucking