- Decomposition is when a decomposer recycles / returns nutrients / nitrogen from dead organisms to the soil by eating those dead organisms
- Decomposition is when a decomposer breaks down dead organisms
- Therefore, a decomposer returns nutrients to the soil by breaking down those dead organisms

- A plant is a kind of organism
- A tree is a kind of plant
- Hence, a tree is a kind of organism

- A tree is a kind of organism
- If a tree falls then that tree is dead
- So, a fallen tree is a kind of dead organism

- A fallen tree is a kind of dead organism
- A tree contains wood
- Therefore, wood is a part of a dead organism

- A decomposer returns nutrients to the soil by breaking down those dead organisms
- Wood is a part of a dead organism
- Hence, a decomposer returnes nutrients to the soil by breaking down wood

- A decomposer returnes nutrients to the soil by breaking down wood
- When something is returned to a place that something is released to that place
- So, when a decomposer breaks down wood, nutrients are relseased

Therefore, when a decomposer breaks down wood, nutrients are relseased
In a healthy forest, dead trees and limbs fall to the ground and decompose. Which of these statements best describes why decomposition is important to a forest ecosystem?
- If a tree falls then that tree is dead 
- A plant is a kind of organism 
- Decomposition is when a decomposer recycles / returns nutrients / nitrogen from dead organisms to the soil by eating those dead organisms 
- Decomposition is when a decomposer breaks down dead organisms 
- When something is returned to a place that something is released to that place 
- A tree is a kind of plant 
- A tree contains wood