Science, asked by Hopegilmore52, 6 months ago

Which structures are part of the body's first line of defense against pathogens?

A. mucous membranes

B. red blood cells

C. lymph nodes

D. white blood cells

Answers

Answered by Anonymous

8

mucous membranes......

Answered by jeonjk0

0

Answer:

mucous membranes;;;;.............

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