Answer:
Skin, mucous membranes, mucus, hair, stomach acid.
Explanation:
Our body has defense mechanisms to combat the different agents that can invade the body and cause infections, or even allergic reactions. The body's defenses against infection include natural barriers such as skin, mucous membranes, mucus, hair, stomach acid, among others, and nonspecific mechanisms such as certain types of white blood cells and fever, and specific mechanisms such as antibodies.
