Sewage sludge is sometimes used as a fertilizer, unless it is contaminated with
A. heavy metals.
B. high concentrations of water purifiers.
C. high concentrations of fluoride.
D. agricultural chemicals.
A. heavy metals.
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The brain and spinal cord constitute the ________ nervous system
A) peripheral B) central C) autonomic D) sympathetic
What structure divides the heart into right and left sides?
A) mitral valve B) chordae tendineae C) septum D) mediastinum
An eccentric contraction is
A. the contracting muscle that initiates movement. B. the opposing (relaxing) muscle during muscle contraction. C. a muscle that contracts and shortens as a weight is lifted.
"____________________" such as piercings and tattoos presents unique dangers, including adverse reactions to tattoo inks and bacterial and viral infections
Fill in the blank(s) with correct word