Subsidence can occur as the result of extraction of oil. Indicate whether the statement is true or false
T
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Cutting back on the pollutants that cause acid rain is one solution to the problem of acidified lakes. Suggest another.
A. add ammonium ions to the lakes B. stop using NaCl to salt the roads in the winter C. add chlorine and filter the water to remove any acidity in the lake D. add a neutralizing substance such as limestone
The best evidence of vertical wind shear in this development of a multicell thunderstorm is at
A) A.
B) B.
C) C.
D) D.
Which of the following is a way that slopes fail?
A) Large blocks fall from cliffs B) Rocks, soil, sediment, and ice slides down steep hillsides C) Pieces of loose rock accumulate on talus slopes until the angle becomes too steep D) Soil and other loose material can flow rapidly down slopes, forming debris flows E) All of these are correct.
The light-color layers within a typical gneiss are formed by ________.
A. pyroxenes B. amphiboles C. calcite D. feldspars E. olivine