Question

oils on the skin and saliva chemicals are both part of which type of immune system defense?
heavy immune defense
nonspecific immune defense

Explanation:

Skin oils and saliva chemicals are non-targeted barriers that defend against all foreign invaders equally, without targeting specific pathogens. This fits the definition of non-specific (innate) immune defense, which forms the body's first line of general protection.

Answer:

non-specific immune defense