I don’t understand this question
<em>Examples of a nonspecific external response to infectious agents and harmful bacteria are the following;</em>
Mucus, saliva, and tears.
They are nonspecific external responses that help to prevent pathogens from entering our bodies.
The specifics contain types of enzymes that break down the bacterial cell walls. An external response of Mucus tends to trap pathogens as well.
For example driving cars, they release nitrogen and sulfur in the water vapor. This causes the water vapor to be more acidic. So then When the precipitation falls back to the Earth it comes down as acid rain.
