<h2><em>Explanation: Anaerobic bacteria can sustain itself without the presence of oxygen. Almost all animals and humans are obligate aerobes that require oxygen for respiration, whereas anaerobic yeast is an example of facilitative anaerobe bacteria.</em></h2><h2><em>Hope</em><em> </em><em>it</em><em> helps</em><em>.</em><em>.</em></h2>
