Most practical solutions to toxic levels of indoor radon involve ____.
A) bioremediation
B) increased cation exchange
C) improved ventilation with fresh air
D) sealing off cracks in basement walls and foundations
E) both C and D
Correct Answer:
Verified
Q22: The adsorption of many pesticides is greater
Q23: Clay,especially of the 2:1 types,tends to adsorb
Q24: One disadvantage of bioremediation is that this
Q25: In soils treated with excessive rates of
Q26: Soil properties play a much more important
Q28: Herbicides are generally the most toxic of
Q29: Most classes of pesticides include some kind
Q30: Soil washing is a commonly used method
Q31: Organic chemicals whose structures have positively charged
Q32: The radionuclide Cesium-137 behaves in soils much
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