Related Clues:

• Being in minor gas explosion?
• Bacterium that requires oxygen
• Oxygen-thriving bacterium
• Oxygen-requiring bacterium
• Bacterium that needs oxygen in Belgium after a country with no leader goes belly up
• Living thing (northern one) in immoderate excitement
• Being good, a lapse arising in class initially ignored
• Creature roaming randomly round south
• Adult bears regularly live without oxygen? One of these can't