bacteria present as normal flora in intestine help producing vitamin k, certain essential substances....... they absorb material required for their growth etc...... n bacteria apart from normal flora...
yes they make u gassy when they feed of ur waste
Bacteria eat the parts of the food in the large intestine that are edible to them and they release bi-products when they digest it.
Digestion, absorption, and creating waste. As you probably know, dont consume Ecoli because it is poisonous.
they help digest the food you eat