Most biological oxidation processes for treating industrial wastewaters have in common the use of oxygen (or air) and microbial action.

Piles smaller than three cubic feet will have trouble generating enough microbial action to eat the material.

They later produced riboflavin by microbial action.

On the other hand, microbial action was unlikely to silence everyone on every survey team simultaneously.

The investigators believe that nitrogen compounds from acid rain have the same effect as the fertilizer on microbial action and the consumption of methane.

Because it can be grown in pure culture, microbial action can be excluded.

They all have in common the use of oxygen (or air) and microbial action to biotreat the pollutants in wastewaters.

It can turn sewage into air and water through microbial action.

There may be microbial action involved in the formation of cave pearls.

The other requirement critical for microbial action (as well as drying) is oxygen.