Final answer:
The microbiome refers to all microorganisms and their genetic material associated with an organism or environment. It includes resident microbiota and transient microbiota.
Step-by-step explanation:
The microbiome is the term used to describe all prokaryotic and eukaryotic microorganisms and their genetic material that are associated with a certain organism or environment. It includes the resident microbiota and transient microbiota, which are microorganisms that live in or on our bodies, and those that are only temporarily present. The composition of the microbiome is influenced by factors such as diet, age, lifestyle, and host health.