Plants called ____________________ take up and retain unusually large amounts of heavy metals in
their above-ground parts.
Fill in the blank(s) with the appropriate word(s).
ANS: hyperaccumulators
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A joint between two walls has been determined to be 0.5 in. if the joint is not to be filled with a sealant. If the same joint is to be filled with a class 50 sealant, its width should be
A) 1/4 in. maximum. B) 2-1/2 in. minimum. C) 1 in. minimum. D) 1/4 in. minimum. E) none of the above.
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The ____________________ is a low spot in metal that is left behind after the force of a flame has
pushed out molten metal.
Fill in the blank(s) with the appropriate word(s).
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One disadvantage of beef is that it is low in vitamin B12
Indicate whether the statement is true or false
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Inspectors who work for the United States Department of Agriculture inspect almost all commercially marketed _____
a. meats c. corn b. potatoes d. eggs
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