The physical property of cleavage, the tendency of certain minerals to split along certain planar surfaces, is conspicuous in
A) sapphire.
B) mica.
C) quartz.
D) chalk.
B
Environmental & Atmospheric Sciences
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A seismic station records an earthquake that has a maximum surface wave amplitude of 50 mm and the S-wave arrives 2 seconds after the P-wave. The Richter magnitude of this earthquake is
A) 3. B) 4. C) 5. D) 6.
Environmental & Atmospheric Sciences
Migration to the United States declined in the 1920s as a result of new laws. What did these laws do?
What will be an ideal response?
Environmental & Atmospheric Sciences
Both ________ and ________ can change global species diversity?
A) immigration; extirpation B) emigration; extinction C) extirpation; extinction D) speciation; extinction E) speciation; immigration
Environmental & Atmospheric Sciences
Which of the following are NOT commonly associated with continental glaciers?
a. drumlins b. cirques c. erratics d. outwash plains e. eskers
Environmental & Atmospheric Sciences