What is one way that micro organisms can be harmful to humans?

Microbes cause infectious diseases such as flu and measles.

https://microbiologyonline.org/about-microbiology/microbes-and-the-human-body/microbes-and-disease

Microorganisms include bacteria, algae, fungi, archaea, viruses, and protozoa. They are very small but they can cause diseases and even lead to death. Some of them are free-living but some are parasites.

they both go up but then go back down. they both end lower than they started. lastly, they both are competitive/the second on.

explanation:

a symbiotic relationship with the mitochondria