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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Calcareous deposits are most likely to be found in more acidic seawater undersaturated in calcite.
Answer the following statement true (T) or false (F)
What mechanism accounts for differential survival and reproduction among members of a species?
a. neptunism b. stratigraphy c. formation d. natural selection e. orogeny
________ 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
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