In humid regions repeat applications of limestone are needed after a few years primarily because of ________
A) increased rates of formation of carbonic acid (H2CO3)
B) increases in phosphate fertilization
C) increases in soil acidity from acid rain
D) the release of aluminum ions from the structure of silicate clays
E) the annual loss of calcium and magnesium in drainage waters
E
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The person who notifies customers once the repairs are completed is the ________
A) Service consultant B) Owner C) Cashier D) Porter
Antibiotics are most commonly administered to livestock through injections
Indicate whether the statement is true or false
Secondary control points are usually established on the job site by _____
a. utility crews b. grading contractors c. carpenters d. inspectors
Electrical contacts, electrodes, and similar industrial components are often made from _____
a. magnesium alloys b. precious metals c. nonferrous iron d. pure nickel