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A microorganism is an organism so small that people cannot see them with the naked eye.
Microorganisms can be harmful and useful organisms.
Harmful microorganisms include fungi, bacteria, protozoa, etc.
They cause several diseases in human beings, animals, and plants, which can even lead to death.
The harmful microorganisms not only can damage the human body, but also the food we eat.
Research about the main characteristics of the microorganisms and give examples!
There are five types of microorganisms. Out of these five, four can be free-living or parasitic.
There is one that can be only parasitic since it always reproduces inside other living things.
After enumerating them, click on the flags below to mark the ones which can be free-living and the ones that cannot.
