The capillary zone would be thickest in a soil composed of:
a. clay
b. silt
c. sand
d. gravel
a
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A nerve gas such as sarin does which of the following?
A) causes a decrease in acetylcholine B) irreversibly inhibits acetylcholinesterase C) reversibly inhibits acetylcholinesterase D) reacts directly with acetylcholine
A factory illegally dumps arsenic-rich wastewater into a lake, where the residence time of the arsenic is 10 years. If the dumping stops, after 30 years, the amount of arsenic in the lake will be one-third what it was when the dumping was stopped.
Answer the following statement true (T) or false (F)
The average rate of groundwater flow is:
a. a few kilometers per day. b. a few meters per day. c. a few centimeters per day. d. a few millimeters per day. e. imperceptible.
A warm rain falling through a layer of cold, moist air can produce ____ fog
A) radiation B) frontal C) advection D) upslope