The United States Environmental Protection Agency regulates the amount of sewage sludge that can be applied on agricultural land by setting limits on ________.
A) the rate of metal application to any parcel of land in any one year
B) the total accumulative amount of metals that can be applied to a parcel of land, regardless of when the metals are applied
C) the concentrations of metals in the sludge to be applied
D) all of the above
E) none of the above
Question 2A soils contaminated with a heavy metal may be bioremediated by ________.
A) growing and harvesting plants that take up large quantities of the toxic metal
B) burying the contaminated soil in a secure landfill
C) applying a source of carbon and nitrogen to the soil
D) applying genetically engineered bacteria that can degrade the metal
E) all of the above
Question 3A pesticide is more likely to contaminate groundwater if it has which of the following characteristics?
A) highly soluble in water
B) strongly adsorbed to soil colloids
C) rapidly degraded by soil microorganisms
D) highly volatile (high vapor pressure)
E) all of the above
Question 4Which of the following types of chemical would be classed as a pesticide?
A) herbicides
B) rodenticides
C) insecticides
D) both B and C
E) all of the above
Question 5In the United States, losses of soil due to wind and water erosion decreased by nearly 40 between 1982 and 2003.
Indicate whether the statement is true or false
Question 6The T values are the maximum losses of soil by erosion that can be tolerated without a reduction in the soil's long term productivity.
Indicate whether the statement is true or false
Quick Reply
