List four of the seven examples of the body’s natural defense mechanisms

The skin

Digestive tract

Vagina

Mucous membrane

Explanation:

The skin prevents microbes from entering the body

Digestive tract e.g. stomach acid is a natural defence mechanism

The vagina is acidic and this prevents harmful bacteria from growing with it's own flora.

Mucous membranes e.g. lining of the mouth, nose, eyelids are all defense mechanisms.

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answer; philip zimbardo;