Decomposers break down proteins in dead organisms, releasing

  1. ammonium ions
  2. nitrate directly into the air
  3. nitrogen gas
  4. oxygen
Answer

A) ammonium ions

Decomposition produces ammonium. O Level Biology · Topic 19 Relationships of Organisms with One Another and with the Environment · 19.2 Nutrient cycles

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