The body's first line of defense against the invasion of organisms is
A)the skin.
B)chlorination.
C)white blood cells.
D)fever.

Name: The body's first line of defense against the invasion of organisms is A)the skin. B)chlorination. C)white blood cells. D)fever.
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Question

Quizplus · Accepted Answer

The skin acts as a physical barrier preventing the entry of organisms into the body. It also secretes sweat and oil which contain antimicrobial substances that can kill or inhibit the growth of bacteria and other microorganisms.

The Body's First Line of Defense Against the Invasion of Organisms