Question

The body has defenses to protect itself from diseases. What is a mechanical barrier to diseases?

A hairs in the nose
B plasma
C stomach acid
D white blood cells​

Answer 1

A. Hairs in the nose

Step-by-step explanation:

Mechanical barriers — which include the skin , mucous membranes , and fluids such as tears and urine — physically block pathogens from entering the body. This includes the hairs in the nose.