Question

Coughing, oils in skin, cilia that

sweep out invaders, saliva
chemicals, and stomach acid are
all a part of which type of immune
system defense?

Answer 1

The first line of defence (or outside defence system) includes physical and chemical barriers that are always ready and prepared to defend the body from infection. These include your skin, tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood cells called neutrophils.

Step-by-step explanation:

i hope that helps. have a great day!! :)

Answer 2

The first line of defence (or outside defence system) includes physical and chemical barriers that are always ready and prepared to defend the body from infection. These include your skin, tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood cells called neutrophils.

Explanation: brainlieast...?