- Decomposition is when a decomposer breaks down dead organisms
- An organism is a source of organic material
- Hence, decomposition is when a decomposer breaks down organic material

- A microorganism is a kind of decomposer
- Compost is solid waste in which organic material is broken down by microorganisms
- Hence, compost is solid waste in which organic material is broken down by decomposers

- Decomposition is when a decomposer breaks down organic material
- Compost is solid waste in which organic material is broken down by decomposers
- Therefore, compost is a solid waste in which decomposition occurs

- Decomposition is a kind of process
- Decomposers perform decomposition
- If something performs a process then that process relies on that something
- So, decomposition relies on decomposers

- Compost is a solid waste in which decomposition occurs
- Decomposition relies on decomposers
- Hence, compost relies on decomposers to work

So, compost relies on decomposers to work
Question: Rolanda is growing tomato plants in her garden. She has created a compost pile and has been adding compost around her tomato plants to help fertilize them. Compost is solid waste in which organic material is broken down by microorganisms in the presence of oxygen to where it can be safely stored, handled, and applied to the environment. On what does Rolanda primarily rely in order for composting to work?
Context: - Decomposition is a kind of process 
- A microorganism is a kind of decomposer 
- Decomposition is when a decomposer breaks down dead organisms 
- An organism is a source of organic material 
- Decomposers perform decomposition 
- Compost is solid waste in which organic material is broken down by microorganisms 
- If something performs a process then that process relies on that something