Name four functions of micro-organisms in the digestive system of ruminants​

I don't know answer to this question, but I can explain what it wants for you to name, if that would helped you.

It says that you have to find 4 doings of bacterias (micro-organisms) in the organ system for digestion.

clinically, some people often have repeated allergies, eczema and respiratory infections or other parts of the infection, in this case, in addition to some routine tests such as tests for white blood cells, immunoglobulin series, lymphocyte subsets, etc., the five immune immunoglobulin tests are also necessary.

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides