Category Nuances for dissolved_oxygen:

• important,
• dissolved,
• corrosive,
• environmental,
• key,
• critical,
• foreign,
• desired,
• chemical,
• physical,
• quantitative,
• liquid,
• volatile,
• common,
• traditional,
• replaceable,
• aquatic,

Simple Categories for dissolved_oxygen:

• constituent,
• system,
• substrate,
• attribute,
• gas,
• measure,
• substance,
• component,