The time that scientists estimate that humans began to domesticate plants (and animals), which included plant propagation, was ________ years ago.
Fill in the blank(s) with the appropriate word(s).
10,000
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IDENTIFY TEST PROCESS SYMBOLS AND DIAGRAMS
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Technician A says that timing components are built with a tolerance that allows + or - one tooth to be aligned improperly during installation. Technician B says that water pumps that are driven by the timing belt need to be timed. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
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The number one ingredient in poultry feeds is:
A. soybean meal B. corn C. calcium D. alfalfa
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A carbon steel ring, with a piece of soft metal bolted across the middle of the ring is a _____
a. steam target b. test tree c. slip blind d. blind flange
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