Why do we refer to soil pasteurization and not soil sterilization?
What will be an ideal response?
We selectively kill harmful organisms trying to leave beneficial
organisms. This is pasteurization. If we sterilized the soil we would be killing all
organisms.
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Currents of a three-phase system are ____ degrees out of phase with each other.
A. 60 B. 90 C. 120 D. 180
A(n) ____________________ generates the electrical power source in the charging system.
Fill in the blank(s) with the appropriate word(s).
Use the table in the accompanying figure to find the number of teeth given an outside diameter of 5.644 inches and a pitch of 1.771.
A. 5 B. 6 C. 8 D. 10
Smaller aggregate is incorporated in the concrete mixture, then exposed after tilt-up by using _____.
a. compressed air b. vibratory grinding c. rotary wire brushing d. pressure washing