Question: What are the four main types of germs?

Stephanie Dyson answered on 18 Mar 2015:

The four main types of germs are bacteria, viruses, fungi, and protozoa. Bacteria are tiny, one-celled creatures that get nutrients from their environments in order to live. In some cases that environment is a human body but they can divide inside or outside the body.

Viruses need to be inside living cells to grow and reproduce. Most viruses can’t survive very long if they’re not inside a living thing like a plant, animal, or person.

Fungi are multi-celled (made of many cells), plant-like organisms. Unlike other plants, fungi cannot make their own food from soil, water, and air. Instead, fungi get their nutrition from plants, people, and animals.

Protozoa are one-cell organisms that love moisture and often spread diseases through water.

Steph