Ontario Grade 9 Science Class Practice Exam

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Which describes organisms that break down dead matter into ammonium?

  1. Herbivores

  2. Carnivores

  3. Decomposers

  4. Producers

The correct answer is: Decomposers

Decomposers are the organisms that break down dead matter into ammonium. Herbivores and Carnivores are both types of consumers and do not play a role in breaking down dead matter. Producers use inorganic substances to produce their own energy and do not break down dead matter.

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