The size of leaching field a septic system requires is determined
A. solely on the permeability of the soil beneath the leach field.
B. by the height of the water table.
C. solely on the number of people served or volume of wastewater that is anticipated.
D. based on both the number of people served or volume of wastewater anticipated and permeability of the soil.
Answer: D
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Why do we use the pH scale to indicate the acidity of a solution rather than simply stating the concentration of hydronium ions?
A) It includes the concentration of hydronium and hydroxide ions. B) It is used because the general public understands it. C) It is more accurate to use the pH scale. D) It is more convenient, since the concentration of hydronium ions is so small.
__________ organisms rely on external sources of nutrients. Fill in the blank(s) with the appropriate word(s)
European nations ________
A) have converted all farms to organic agriculture B) produce so little food that they have to import most meats and vegetables C) have refused to allow synthetic pesticides to be used on nonexported crops D) along with Canada, Brazil, and Argentina have developed and planted many GM crops E) do not support the growth or sale of GM crops
How warm something is has most to do with molecular
A. kinetic energy. B. stickiness. C. masses. D. potential energy.