# Roles & Symbiotic Relationships of Micro-organisms

> Micro-organisms do more than cause disease. They produce food in food chains, decompose dead matter, drive parts of the nitrogen cycle, and live in close partnerships called symbiosis. This section…

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## More in Biodiversity and classification of micro-organisms

- [Structure & Characteristics of Micro-organisms](https://www.hlayiso.com/grade-11/life-sciences/notes/biodiversity-and-classification-of-micro-organisms/structure-and-characteristics-of-micro-organisms) — Previous section
- [Diseases Caused by Micro-organisms](https://www.hlayiso.com/grade-11/life-sciences/notes/biodiversity-and-classification-of-micro-organisms/diseases-caused-by-micro-organisms) — Next section
- [All Biodiversity and classification of micro-organisms sections](https://www.hlayiso.com/grade-11/life-sciences/notes/biodiversity-and-classification-of-micro-organisms)

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