What is a decomposer?

A decomposer breaks down dead organic matter into simpler inorganic substances, returning nutrients to the soil.

• Examples: Bacteria, fungi (mushrooms, moulds)
• Break down proteins and cellulose into CO₂, water, and minerals.
• Essential for completing nutrient cycles (nitrogen, carbon cycles).
• Without them, dead matter would pile up and nutrients would be locked away.

Decomposers break down dead matter into nutrients, recycling essential elements back into the ecosystem.