Why might logging of a drainage basin change the slope of the river?
A) The base level of the stream is altered by the increased sediment load.
B) The stream must steepen to accommodate the increased runoff.
C) Increased sediment load causes the river to steepen its gradient to transport more sediment.
D) Decreased erosion shuts off sediment supply, causing the river to erode.
C
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What is the name given to Earth's cool, rigid outer layer based on physical properties?
A) Asthenosphere B) Core C) Lithosphere D) Troposphere
A supercell storm: a. can produce hail as large as grapefruits
b. has rotating updrafts. c. lasts longer than ordinary cell thunderstorms. d. All of these choices.
An estimated ________ percent of the Earth's precipitation occurs over oceans
A) 8 B) 14 C) 22 D) 78
Some strike-slip faults are big enough to accommodate movement between two tectonic plates
Indicate whether this statement is true or false.