There are many different kinds of bacteria. Bacteria are quite tough and can live just about anywhere. A fungus may look like a plant, but the microorganisms called fungi are more closely related to animals. Many fungi get their nutrients directly from soil, while others feed on dead plants and animals. Mushrooms we buy at the food market are a fungus you can eat.
Fungi come in many sizes and forms, and some have important uses to humans.
Yeasts are very tiny fungi that we use to bake bread.