The body's inner surfaces are protected against penetration by harmful microorganisms by ____.
A) water permeable outer skin layers
B) watery mucus
C) high pH of gastric and vaginal environments
D) cilia
E) warm, moist environments

Question

The body's inner surfaces are protected against penetration by harmful microorganisms by ____.​
A) ​water permeable outer skin layers
B) ​watery mucus
C) ​high pH of gastric and vaginal environments
D) ​cilia
E) ​warm, moist environments

Quizplus · Accepted Answer

The Answer of The body's inner surfaces are protected against penetration by harmful microorganisms by ____.​
A) ​water permeable outer skin layers
B) ​watery mucus
C) ​high pH of gastric and vaginal environments
D) ​cilia
E) ​warm, moist environments

The Body's Inner Surfaces Are Protected Against Penetration by Harmful