Final answer:
The complete collection of microorganisms in the human body's ecosystem is referred to as the microbiome. It includes both resident and transient microbiota.
Step-by-step explanation:
The complete collection of microorganisms in the human body's ecosystem is referred to as the microbiome. The microbiome includes all prokaryotic and eukaryotic microorganisms, along with their genetic material, that are associated with the human body. It consists of both resident microbiota, which are microorganisms that constantly live in or on our bodies, and transient microbiota, which are microorganisms that are temporarily found in the human body.