Digestive problems can arise from a lack of ____________________, the lactose-digesting enzyme.
Fill in the blank(s) with the appropriate word(s).
lactase
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Organic matter is the portion of the soil that includes plant and animal remains at various stages of
decay.
Indicate whether the statement is true or false.
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In a closed-loop system, the plastic water pipes that are buried in the Earth are called ____.
A. ground loops B. thermal loops C. water loops D. both a and c
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What type of fire extinguisher can create a corrosive compound when discharged?
A) CO2 B) Water C) CO D) Dry chemical
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Stairs are shown on floor plans by:
A. the width of the tread B. the direction and number of risers C. the lengths of handrails or guardrails D. DN for down, UP for up, and R for risers E. all of the above
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