Bedrock and sediment in a stream is most susceptible to erosion if it is
A) in slow-moving water in an eddy.
B) in a site that is sheltered from oncoming clasts.
C) located in a turbulent part of the river.
D) composed entirely of large clasts that affect stream flow.
E) All of these are correct.
C) located in a turbulent part of the river.
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Which of the following is a valid description of features within continental interiors?
A) The central region of a continent is called a shield and is a broad, basaltic volcano with gentle slopes. B) The continental platform has nearly horizontal sedimentary rocks deposited on crystalline basement. C) The oldest exposed rocks in a continent are usually along the coastline. D) Broad domes and basins in continental interiors have nearly vertical beds around their flanks. E) All of these are correct.
If water is depleted from an aquifer faster than the recharge rate,
A) the water table will rise. B) surface water will stop percolating downward. C) wetlands will flood. D) sinkholes may form.
Why were the ideas regarding continental drift not readily accepted by scientists in the early 20th century?
A. They recognized that vertical forces explain Earth's geology. B. There was no proposed mechanism to cause such a drift. C. The continents did not fit exactly as if they had split.
When compared to their warmer water counterparts, cold-water plankton often ________
A) are larger in size B) are smaller in size C) exhibit countershading D) have more spines and ornamentation on the cell wall E) reproduce asexually only