When a friend informs you that a spider is crawling on your arm, you might react with alarm and try to frantically swat the creature away. Fortunately, this probably doesn't happen often, as we don't normally find things crawling on us. Or do we? That depends on whether or not you are counting the trillions of tiny organisms inhabiting your body on a daily basis.
Microbes Can be Seen Under a Microscope
scientist with microscope
Welcome to the world of microbes. A massive population of microorganisms too small to see with the naked eye, these creatures are literally everywhere. But before you panic about the fact that they are presently inhabiting your body, it is important to understand that they typically do much more good than harm.
While some examples such as bacteria and viruses are usually to blame when we get sick, the benefits of microbes to our world are vast. In this lesson, learn more about this unseen group of organisms and gain a better understanding of how they fit into our world.