What class of organisms are Clostridium sp.that can live in the presence of oxygen but do not use oxygen in its metabolic processes?

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An aerotolerant anaerobe is one that can live in the presence of oxygen but does not use oxygen in its metabolic processes.A microaerophilic bacterium requires a reduced level of oxygen to grow.An obligate anaerobe cannot survive in the presence of oxygen, and a facultative anaerobe can grow either with or without oxygen.

What Class of Organisms Are Clostridium Sp