The the idea of base level refers to
A) the average height of a stream channel.
B) a level below which a stream cannot erode its valley.
C) an evolutionary cycle of landscape development from fluvial action.
D) the amount of discharge in a particular reach of a stream.
B
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What mechanism accounts for differential survival and reproduction among members of a species?
a. neptunism b. stratigraphy c. formation d. natural selection e. orogeny
Which of the following is the Brønsted-Lowry definition of an acid?
A) a hydroxide ion acceptor B) a proton acceptor C) a proton donor D) none of these
Calcareous deposits are most likely to be found in more acidic seawater undersaturated in calcite.
Answer the following statement true (T) or false (F)
________ are major lines of weakness in Earth's crust that cross the mid-oceanic ridge at right angles.
A. Submarine canyons B. Fracture zones C. Transform faults D. Abyssal fans E. Fold belts