how can having 100 trillion microorganisms on and in the human body keep us healthy?

The correct answer is because the microorganisms that live in us help us in the most basic vital functions.

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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the answer is true.

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.