Which of the followings is not true?
a. water levels in aquifers can change due to groundwater extraction.
b. around clusters of pumping wells, cone of depression can be miles in extent.
c. drawdown is the decline in water level at a well relative to initial water level.
d. groundwater divide is funnel-shape zone of water-level decline around a well that occurs due to pumping.
which of the followings is not true?
a. the fact that there are oases in the western desert in egypt proves that there is groundwater under the desert.
b. disappearance of march arab in mesopotamia in the 1980-90s was mainly due to the river diversion and dam constructions.
c. gasoline evaporates faster than water does because gasoline has lower vapor pressure than water.
d. generally, pollution problems are less evident in groundwater than in surface water such as lakes and rivers.
which of the followings is not true?
a.
a) fresh water comprises only 3% of all water on earth
b.
a) most of earth’s freshwater is in large lakes such as lake eerie.
c.
a) in the united states, more water is used for thermoelectric power generation than for public water supply.
d.
a) the largest reservoir of earth’s available freshwater is aquifer
which of the followings is true about sustainable development of natural water resources?
a.
streamflow can increase due to groundwater extraction.
b.
groundwater can be replenished by artificial recharge.
c.
overextractoin of groundwater can increase groundwater storage.
d.
groundwater is recharged by precipitation as soon as it is extracted.
water is neither created, nor destroyed, just rearranged in hydrologic cycle.
true
false