Which of the following processes are most apt to encourage good soil aeration?
A) creation of more macropores
B) root respiration
C) organic matter decomposition
D) diffusion of oxygen from the soil to the atmosphere
E) reaction of oxygen with organic matter
A
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The study of or the explanation of natural phenomena is called ____________________
Fill in the blank(s) with correct word
Which of the following best describes the type of brakes used on most highway tractors?
A. Wet brakes B. Dry brakes C. Air brakes D. Air-over-hydraulic brakes
The crankshaft journals have been turned. What size bearings should be installed?
A) Undersize B) Oversize C) Standard D) It makes no difference which size is installed
A plumb bob is a conical metal weight hung from a string and used to provide a vertical reference line.
Answer the following statement true (T) or false (F)