Which kind of barrier does skin present to pathogens?

A. chemical

B. physical

keratinized epithelium

The primary barrier to the entrance of microorganisms into the body is the skin. Not only is the skin covered with a layer of dead, keratinized epithelium that is too dry for bacteria in which to grow, but as these cells are continuously sloughed off from the skin, they carry bacteria and other pathogens with them.

answer; ///(copd) chronic obstructive pulmonary disease,plz check first ///good luck