All living things are created by god. Humans, animals and plants are living things. They are vary in size and can be seen with naked eyes. However, there are tiny living things that can only be seen through a microscope. These are called microorganisms.A microorganism is an organism that is so small that it is invisible to the naked eye. Microorganisms are single-celled or unicellular organism. Microorganisms are found everywhere in nature even in hostile environment like the poles, deserts, geysers, rocks and the deep sea.
Types of Microorganisms
There are four types of microorganisms; bacteria, fungi, protozoa and virus.