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anteprimorac anteprimorac
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Posts: 1092
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6 years ago
Why are polychlorinated biphenyls toxic to humans? All of the following are consequences except:
 
  a. They weaken the immune system.
 b. They cause liver damage.
 c. They cause brain damage to children exposed in the womb.
  d. They cause skin cancer.
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wrote...
6 years ago
d
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