Estrus normally occurs _____ to _____ days after pigs have been weaned from sows
a. 4, 10 c. 11, 15
b. 2, 5 d. 16, 20
A
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An electron has a positive charge, while a proton has a negative charge.
Answer the following statement true (T) or false (F)
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A solid material exerts a pressure or force ____.
A. in all directions B. downward only C. outward and downward D. outward only
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On spring-applied brakes hydraulic pressure is used to hold off the brakes in the ____________ position.
Fill in the blank(s) with the appropriate word(s).
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Food chains support commodity distribution
Indicate whether the statement is true or false
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