Why does weathering of granite bedrock produce rounded shapes?
A) The rounded shapes are pillows formed at depth in the granitic magma.
B) Weathering removes corners and edges, as in spheroidal weathering.
C) Burrowing animals eat away parts of the granite.
D) Roots rub against the edges of the granite.
B) Weathering removes corners and edges, as in spheroidal weathering.
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Energy can be conserved by ________
A) replacing compact florescent with tungsten bulbs B) cogeneration in power plants, fuel efficient transportation, reengineered appliances C) cogeneration in automobiles, especially in SUVs D) replacing mass transit with more and larger roads for cars and trucks E) repealing the Law of Entropy
Given the size of the region, no tracts of generally unpolluted wilderness remain in Northern Eurasia
Indicate whether the statement is true or false
Currently, what are the main sources of marine pollution? How can these be reduced or eradicated in the future?
Mudflows and debris flows occur when water and loose materials move down a slope like a thick liquid.
Answer the following statement true (T) or false (F)