Debris flows
A. both may move rapidly and transport rock materials of greatly different size and are common in semi-arid regions are correct.
B. may move rapidly and transport rock materials of greatly different size.
C. are common in semi-arid regions.
D. are not fluids in their behavior, but are dry flows of material.
Answer: A
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Not much dolomite is observed to be precipitating from solution in modern geologic environments. This probably means that:
a. the conditions were more conducive to precipitation of dolomite in the geologic past b. dolomite must have formed from calcite after deposition by the replacement of calcium by magnesium in the mineral structure c. dolomite is probably forming today, but we haven't located the environments where it is taking place d. dolomite must have formed from gypsum after deposition by the replacement of calcium by magnesium in the mineral structure
Estimate the amount of fuel that could be saved if the efficiency of 10 million cars is increased by five percent. Assume an annual driving distance of 12,000 miles (19,300 km) and an average gasoline consumption of 25 miles per gallon (10.6 km/liter).
What will be an ideal response?
What substitution did Glatzmaier and Roberts make in their model?
A) straight-angled rotation of Earth for its real tilted axis B) average density in place of specific densities C) the viscosity of water for the viscosity of the outer core D) thermal convection for compositional convection
Judge the following sentence according to the criteria given below: It is advantageous for fishers to choose a population that feeds as close to the primary producing population as possible BECAUSE energy transfer between trophic levels is
inefficient. 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.