The origin of submarine canyons is not well understood but is most likely to be ____
A) erosional, caused by a combination of stream erosion and turbidity currents
B) tectonic, representing down-folds of rock within the continental shelf
C) organic, resulting from the activities of burrowing organisms
D) glacial, through the process of depositing rock debris from melted ice on the shelf
A
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Desert soils have very poorly developed horizons.
Answer the following statement true (T) or false (F)
If the temperature in the Earth generally increases with depth, how is it possible that the inner core is a solid?
A) Temperatures increase to a certain point before leveling off below the melting point of the core. B) The pressures in the core are immense and keep it in a solid state in spite of the temperature. C) Earth's interior does not reach temperatures high enough to melt the material of the inner core. D) The inner core is shedding the heat so quickly that melting does not have time to occur.
Earth's albedo has a negligible effect on Earth's average energy budget
Indicate whether the statement is true or false
The probability of suffering harm from a hazard that can cause injury, disease, death, economic loss, or damage is referred to as ____.
A. negligence B. exposure C. peril D. dangerous E. risk