- Decreasing the number of something limits the supply of that something
- Cutting down trees in a forest causes the number of trees to decrease in that forest
- Therefore, cutting down trees in a forest limits the supply of trees in that forest

- Cutting down trees in a forest limits the supply of trees in that forest
- Trees are a renewable resource
- So, cutting down trees in a forest limits the supply of a renewable resource in that forest

So, cutting down trees in a forest limits the supply of a renewable resource in that forest
Which of the following could limit the supply of a renewable resource?
- Trees are a renewable resource 
- Decreasing the number of something limits the supply of that something 
- Cutting down trees in a forest causes the number of trees to decrease in that forest