Decomposers are not typically shown on an energy pyramid. This is because they don't fit neatly into the traditional trophic levels (producer, primary consumer, secondary consumer, etc.).

Here's why:

* They break down dead organic matter: Decomposers don't consume living organisms like other consumers do. They feed on dead plants and animals, breaking them down into simpler compounds.

* They don't directly transfer energy: While they obtain energy from the breakdown of dead organisms, they don't contribute to the energy flow within the pyramid. The energy they release is returned to the environment.

* They recycle nutrients: Decomposers play a crucial role in recycling nutrients back into the ecosystem, making them available for producers.

Instead of being placed on an energy pyramid, decomposers are often represented separately:

* At the base of the pyramid: This emphasizes their role in recycling nutrients and maintaining the ecosystem's balance.

* Outside the pyramid: This highlights their unique position as a separate group that doesn't fit within the traditional trophic levels.

In summary: Decomposers are essential for ecosystem health, but their role in energy flow differs from that of producers and consumers. They are often represented separately from the energy pyramid.