The answer is that they do not live on or in the body of a host.
Answer:
To test hypothesis and learn more about the world around us. We don't want to live in the dark, now do we? its human nature to wonder and imagine and explore. It's the major quality that makes us even human.
Explanation:
if you were looking for a long answer there u go XD. but a shorter one is just to learn about the world around us.
Answer:
provide protection against pathogens
Explanation:
