Answer: Microbiota on the skin and gastrointestinal tract, wherein commensal bacteria flourish
Explanation: Microbiota on the skin and gastrointestinal tract, wherein commensal bacteria flourish, is an example of commensalism in humans. Fungus Aspergillus grow in the gastrointestinal tract of humans and share commensalism with them. The human GI tract provides a suitable environment to grow without harming the host humans