Why are swollen lymph nodes a sign of infection?

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A. Memory cells are stored in the lymph nodes.

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B. Infections cause increased lymphocyte production.

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C. Bacteria and viruses mostly attack the lymph nodes.

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D. The liver produces more lymph during infections.

the answer is c) abandoned properties that are contaminated with hazardous materials.

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the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

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sex cells are usually half's then they find another half and make a fertilize egg