A sustainable resource is one that

  1. runs out quickly
  2. is made only by humans
  3. is never used
  4. is produced as rapidly as it is removed
Answer

D) is produced as rapidly as it is removed

It does not run out. O Level Biology · Topic 19 Relationships of Organisms with One Another and with the Environment · 19.5 Conservation

Biology MCQ · More O Level Biology: Organisms and the Environment MCQs · Practise