Which of the following explains why many household septic systems end up contaminating the shallow groundwater system?
A. all of the answers listed here
B. drain field becomes plugged by solids leaving the septic tank
C. residents pouring household chemicals down their drains
D. water table is too high for the system to operate properly
E. permeability of material beneath drain field is too low for proper drainage
Answer: A
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Which of the following is a scientific hypothesis?
A) The Moon is made of green cheese. B) There are things we will never know about. C) Matter is filled with undetectable particles. D) There are parts of the universe that will never be found by man. E) none of the above
Platelike crystals between a low Sun and an observer can also ________ sunlight off their tops and bottoms to produce ________
Fill in the blank(s) with the appropriate word(s).
The Taliban are members of which ethnicity?
A) Hazara B) Pashtun C) Tajik D) Kurd E) Azeri
What is a stream that develops along a zone of structural weakness?
A. consequent B. antecedent C. superimposed D. subsequent E. sinuous