Which of the following best describes the current state of the world's largest aquifer, the Ogallala Aquifer in the American Midwest?
A. It continues to decrease in volume as water is pumped for human uses.
B. It is recharging quickly as a result of increased rainfall.
C. It is recharging slowly but still faster than the water removal rate.
D. It is experiencing saltwater intrusion.
E. It is completely dried as a result of overpumping.
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Three common methods employed in the cleanup of oil spills are
A. areation of water, skimmer boats, and genetically engineered bacteria.
B. aeration of water, phytoremediation, and genetically engineered bacteria.
C. skimmer boats, high temperature incineration, and phytoremediation.
D. large floating booms, high temperature incineration, and phytoremediation.
E. large floating booms, kimmmer boats, and genetically engineered bacteria.
In a river ecosystem, dissolved oxgyen concentrations drop quickly downstream from a point source input of organic matter into the river. This effect is due to
A. increasing populations of mayfly and stonefly larvae.
B. increasing activity of trout and sea bass.
C. increasing bacterial activity as organic matter decays.
D. decreasing bacterial activity as turbidity increases.
E. decreasing water temperature as surface evaporation increases.
Which of the following is/are true of using freshwater aquifers for potable and irrigation water in an arid region? I. slow recharge of the aquiferII. aquifer pollutants not naturally cleansedIII.eutrophication
A. I only
B. II only
C. I and II only
D. I and III only
E. I, II, and III
Questions 5 - 7Which of the following is an appropriate remediation strategy for removing radon gas from the home?
A. Use filtered water for drinking and bathtime.
B. Do not occupy the basement of the home.
C. Place mmonitors in suspect areas of the home.
D. Remove and replace soil in crawl spaces under the home.
E. Seal or ventilate places where radon enters the living space.
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