happygirl15 happygirl15

12-08-2021
Biology

contestada

Which structure represents the body's first line of defense against infection?
A. Thymus
B. Skin
C. Bone marrow
D. Tonsils

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dr84wybpty dr84wybpty

12-08-2021

The answer is A : Thymus

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rthomas111 rthomas111

12-08-2021

The first line of defense for the body is the skin. It forms the layer that keeps external things out.

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