- Aluminum is a kind of material
- Aluminum is recyclable
- So, aluminum is a kind of material that is recyclable

- Aluminum is a kind of material that is recyclable
- Recyclable means a material can be recycled many times
- So, aluminum can be recycled many times

- Aluminum can be recycled many times
- Aluminum is a nonrenewable resource
- Hence, aluminum is a nonrenewable resource that can be recycled many times

- Aluminum is a nonrenewable resource that can be recycled many times
- Recycling nonrenewable resources has a positive impact on the environment
- Therefore, recycling aluminum has a positive impact on the environment

- Recycling aluminum has a positive impact on the environment
- Recycling is a kind of method of disposal
- Therefore, recycling aluminum is the best way to dispose aluminum

So, recycling aluminum is the best way to dispose aluminum
Students are learning about the natural resources in Maryland. One group of students researches information about renewable natural resources in the state. The other group researches information about nonrenewable natural resources in the state. The resources the students investigate include plants, animals, soil, minerals, water, coal, and oil. Aluminum is a nonrenewable natural resource. Which of these methods of aluminum disposal is best for the environment?
- Recycling nonrenewable resources has a positive impact on the environment 
- Recycling is a kind of method of disposal 
- Aluminum is a kind of material 
- Recyclable means a material can be recycled many times 
- Aluminum is a nonrenewable resource 
- Aluminum is recyclable