Final answer:
Dr. Rob Knight states that there are 2 distinct microbial communities in the human body, influencing human health significantly.
Explanation:
According to Dr. Rob Knight, there can be 2 distinct microbiome communities found within the human body. These communities vary in different body habitats and play a significant role in human health and physiology. Research has shown that the human body has 10^4 microbial cells in the gut, 10^3 human cells in total, and 10^2 external microbial cells on the skin.
Learn more about Human Microbiome here:
https://brainly.com/question/28436132
