Question

.
What is a simple way to know for sure that germs have invaded the body?

We develop symptoms like a cough or runny nose or a sore.

We don’t; germs enter our bodies all the time without being noticed.

We get a blood test because germs are microscopic.

We have been around people who are sick.

Answer 1

A simple way to know for sure that germs have invaded the body is that **we develop symptoms like a cough or runny nose or a sore**. These symptoms are often indicators that the body is reacting to an infection caused by germs. However, it's important to note that germs can enter the body without causing noticeable symptoms, as well.