Who discovered the process of fermentation?

Give scientific reasons: In the rumen of cattle,components having high cellulose content get digested easily.

Give the scientific names of any two microorganisms inhabiting the human intestine.

From the given below,which one increases vitamin $B_{12}$ in our stomach and also plays a very beneficial role in checking disease-causing microbes?

Most of the antibiotics are derived from which of the following?

The term $LABS$ abbreviates as: