Answer:
prokaryotic bacteria/cells are found to be the most common type of single organisms.
Although the human colon may be one of the most diverse microbial communities on Earth, the majority of the bacteria are classified as anaerobes.
Anaerobic organisms are life forms that generate ATP in hypoxia conditions (absence of oxygen).
In conclusion, although the human colon may be one of the most diverse microbial communities on Earth, the majority of the bacteria are classified as anaerobes.
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