The nature of volcanic eruptions is closely related to plate tectonics and magma type. Which of the following best describes basaltic magma?
A. relatively SiO2 rich and cool
B. relatively SiO2 poor and cool
C. relatively SiO2 poor and hot
D. relatively SiO2 rich and hot
Answer: C
You might also like to view...
The Coriolis effect causes objects moving in the northern hemisphere to veer off course ____
A) to the right, or clockwise when viewed from above B) to the left, or counterclockwise when viewed from above C) in an upward direction D) in a downward direction
The best approach for slowing worldwide deforestation will require ________
A) focus on charcoal use in developed countries B) focus on limiting consumption in developing countries C) limiting biodiversity losses D) multiple strategies E) focus on soil erosion issues
Which of the following is involved in the conversion of testosterone to estradiol?
A) Conversion of an alcohol to a ketone followed by loss of -H and of -CH3. B) Conversion of a ketone to an alcohol followed by loss of -H and of -CH3. C) Loss of -H and of -CH3 followed by conversion of an alcohol to a ketone. D) Loss of -H and of -CH3 followed by conversion of a ketone to an alcohol.
Which of the following diffuses from the mitochondria into the cytoplasm?
A) argininosuccinate B) carbamoyl phosphate C) citrulline D) ornithine