Local lowering of the water table, called ________, tends to change the direction of groundwater flow by changing the slope of the water table.
A. depressing
B. drawdown
C. porosity
D. invasion
E. artesian
Answer: B
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the solar energy reaching earth travels a distance of ________ million kilometers.
a - 1 b - 150 c - 8 d - 30 e - 567
The ____________ currents flow east to west and west to east, linking the eastern and western boundary currents. Fill in the blank(s) with the appropriate word(s)
Why are fisheries heavily impacted by ENSO events?
A) Upwelling ceases B) Nutrient-rich currents are interrupted when the trade winds shift C) Low pressure systems create downwelling events rather than the normal upwelling D) Rise in sea level effects migration patterns
Most of the 40 deadliest disasters between 1970 and 2013 occurred in a belt running from China and Bangladesh through India and Iran to Turkey. This area was particularly vulnerable because ________.
A. lightning producing thunderstorms are more common in these regions B. fires are more common in these regions C. it has a high population density D. precipitation rates are very high in this region, producing frequent, large, and sudden floods E. most of the world's earthquakes and volcanic eruptions occur here