What is the coefficient of sliding friction and what is a representative value for this coefficient for the brittle crust?
What will be an ideal response?
Answer: The coefficient of sliding friction is the friction coefficient on a preexisting fracture surface, and this value is always lower than the internal friction version of the same rock. Existing fracture surfaces control the strength of the upper crust and the coefficient is given by Byerlee’s laws, which tell us that it is 0.6 for most of the brittle crust, and 0.85 at shallow depths (?s < 200).
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A) protects critical habitats of threatened and endangered species, but it cannot control privately held lands. B) includes species recovery plans intended to help listed species survive and thrive. C) currently protects animal but not plant species. D) has resulted in the recovery of more than 1,000 species that have been taken off the list.
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Indicate whether the statement is true or false
Orographic precipitation occurs on mountainous coasts exposed to moist trade winds or frequent cyclonic storms.
a. true b. false
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