microbes

Microbes are tiny living things that you can't see without a special tool called a microscope. They are much smaller than humans, but their numbers are huge - there are more microbes on this planet than anything else! Microbes can be found everywhere, from the ocean to our bodies and even in the air. Some microbes can make us sick, like the cold or flu virus, but there are also helpful microbes that help us digest our food and give us vitamins.