Rank the following soil components in order of pH buffering capacity, lowest to highest:
a. Clay -> Sand -> Organic Matter
b. Organic Matter -> Clay -> Sand
c. Organic Matter -> Sand -> Clay
d. Sand -> Clay -> Organic Matter
Ans: d. Sand -> Clay -> Organic Matter
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________: as disposable income of a consumer increases, the percentage of income spent for food decreases if all other things remain constant.
Fill in the blank(s) with the appropriate word(s).
The number of slaughter cattle marketed by direct marketing methods is _____
a. increasing b. decreasing c. level d. none of these answers is correct
Originally, better ways of growing plants and animals were developed by
a. guessing c. myth and legend b. systematic research d. trail and error
The main components of a plate-style compactor are the _____
a. boom and chain b. platform and base c. vibratory plate and engine bed d. fixed-mast and telescoping boo