A possible consequence of eutrophication is
A. sequestration of dissolved toxins in lake sediments.
B. reduction of nutrient levels in a body of water.
C. an increase in the biodiversity of the body of water.
D. fish kills, because of the lowered dissolved oxygen in the water.
Answer: D
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Mt. St. Helen's is ______.
a - dead b - likely to vigorously erupt again c - scheduled to erupt in the year 2050 d - the largest volcano in the world e - the world's best example of intrusive vulcanism
Which of the following describes the light reflecting and transmission characteristics of a mineral?
A) virtual absorption B) luster C) color streak D) fluorescence
Groundwater is important in the preservation of ________ which develops when porous buried wood is either filled in or replaced by inorganic silica carried in by ground water.
A. petrified material B. preserved wood C. preserved material D. petrified wood
Causes of shifts in relative elevation of land and sea along a coast include
A. melting of ice caps. B. glacial loading. C. tectonic movements. D. All of the choices are correct.