An abiotic factor that varies signfiicantly between people and has strong influence on the gutmicrobiome is _

The development and alteration of the gut microbiome are affected by a variety of factors including birthing and infant feeding method, exposure to stress, environment, diet, medications, stage of lifecycle, and comorbid diseases (Fig. 4.2).

Explanation:

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link: