An aquifer is ________.
a.) a layer or stratum in which groundwater flows downward to the water table
b.) an unsaturated, influent-flow bed or stratum below a spring
c.) the porous and permeable, saturated cone of depression in an aquitard
d.) a saturated, porous, and permeable layer or stratum
Ans: d.) a saturated, porous, and permeable layer or stratum
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If you drilled into an oceanic plateau, you would most likely find
A) a thin layer of oceanic sediment over continental crust. B) andesitic volcanoes buried by turbidity currents. C) a normal thickness of oceanic crust overlain by andesitic volcanoes. D) large amounts of basalt derived from melting in the mantle.
Petroleum accounts for about ________ percent of the energy used in the United States.
A. 10 B. 75 C. 25 D. 35
Picoplankton number 100 million individuals in a liter of seawater at all depths in the ocean
Indicate whether the statement is true or false
____________________ refers to the condition of atmospheric elements at a given time and for a specific location
Fill in the blank(s) with correct word