Desert soils that form on parental material containing virtually no calcite receive their calcium from
A) animal droppings.
B) the asthenosphere.
C) the lithosphere.
D) the atmosphere.
Answer: D
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Cause and effects of water stress may include
A. Per capita renewable water supply is low B. Competition increases among increasing demands for water C. Renewable water supplies are inadequate to satisfy essential human or ecosystem needs D. All of the above are potential causes or effects of water stress
Most scientists did not support Wegener’s theory of continental drift because his
mechanism could not satisfactorily explain continental movement. Indicate whether the statement is true or false.
0000 UTC Convert the following time from UTC to the indicated U.S. time zones:
________ soils are common in the southeastern part of the United States
A) Forest B) Rainforest C) Grassland D) Desert E) Wetland