Answer:
The correct answer is because the microorganisms that live in us help us in the most basic vital functions.
Step-by-step explanation:
These microorganisms determine the immune system's ability to recognize "foreign" factors and distinguish them from harmless ones, maintain balance within the microbial communities themselves without attacking themselves. Also, they are the first barrier against harmful microbes that are outside, behaving like a living defense that is always changing.
Those found in the intestinal area are fundamental to the processing and absorption of nutrients, indispensable to extract the essential nutrients we need to function.
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