The human body has about 10 bacterial cells for every eukaryotic cell. Bacteria coat our skin, gut, and mouth. Also present are protists, archaeans, and viruses. Collectively, these organisms are our microbiota. For most members of our microbiota, our body provides their environment, or space to live. They, in turn, have no effect on us. This is an example of:a. mutualism.
b. commensalism.
c. predation.
d. an antagonistic relationship.

Option-(B): For most members of our micro-biota, our body provides their environment, or space to live. They, in turn, have no effect on us. This is an example of commensalism.

Explanation:

There are different forms and levels of associations which are formed between the different species and they are characterized differently based upon there outcome in a given region or space in which both the living beings interacts, as the result may be harmful or beneficial for either one of them or any number of individuals which are greatly affected by its presence.But, commensalism provides the shelter, food resources, and a place to grown for one being while the other is neither harmed nor is benefited due to the following association that has taken place between the living beings.

There would be no evaporation so no water cycle