### Clue: I care oxygen ban is revised – not! (9)
### Answer: ANAEROBIC 
 ### Explanation: Definition: I care oxygen ban is revised – not
 **Anagram of**(is revised) [I CARE + O(chemical symbol for the element oxygen) + BAN].
Answer: Descriptive of a life form that doesn't require oxygen to survive, and, if there were an oxygen ban, wouldn't care if it were lifted or not. Another fine WIWD clue.