Name two plastic deformation mechanisms that can operate at shallow crustal depths.
What will be an ideal response?
Ans: Twinning (for example in calcite) and wet diffusion, also called pressure solution (typical in carbontates and some quartzites).
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Briefly explain how a stream might adjust toward an equilibrium state following a heavy rain. What will be an ideal response?
When did the gender pattern of undocumented immigrants to the United States from Mexico switch from mostly men to about equal numbers between men and women?
A) the 18th century B) the 1930s C) the 1960s D) the 1970s E) the 1990s
Tautomers are examples of which of the following?
A) constitutional isomers B) diastereomers C) enantiomers D) none of these
Judge the following sentence according to the criteria given below: Dead seaweed on the beach is incorrectly considered to be pollution by some people BECAUSE by definition, nature doesn't pollute
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct but the reason is incorrect. D) The assertion is incorrect but the reason is correct. E) Both the assertion and the reason are incorrect.