The limited horizonation in the soil type pictured below occurs because
A) the subsurface is covered by permafrost.
B) precipitation is limited.
C) volcanic ash has penetrated very deeply beneath the surface in this soil type.
D) leaf litter is so abundant that it tends to leach downward across all of the layers.
B) precipitation is limited.
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Geologists prefer to use rocks from closed systems when they radiometrically date the rocks. What is a closed system,
and why is it important for radiometric dating? What will be an ideal response?
Dip-slip faults include:a
normal faults. b. reverse faults. c. thrust faults. d. normal and reverse faults. e. normal, reverse and thrust faults.
Drainage density will be greater in areas with _____
a. rapid runoff b. high amounts of infiltration c. extensive vegetation cover d. gentle slopes e. few rills
In Hurricane Katrina, the storm came ashore heading almost due north and the eye passed between the towns of Slidell, Louisiana and Waveland, Mississippi
Slidell, LA suffered heavy flooding and moderate wind damage while Waveland, MS was totally destroyed without a single building standing within 200m of the coastline. Both cities experienced the eyewall of the storm where the winds are strongest, so why was the destruction so different? A) Waveland must have been at a lower elevation than Slidell. B) Waveland caught the right front quadrant of the storm, with maximum storm surge and wind. C) Slidell was just lucky and experienced a temporary lull in the storm. D) Slidell must be a sheltered coastline, or protected behind a levee system.