Fact 1: Recycling has a positive impact on the environment.

Fact 2: Steel is a recycled and recyclable product.

Given the two facts above, answer the question "What has a positive impact on the environment?" with the following options: 
- animals
 - bushes
 - energy
 - peachleaf willow
 - oysters
 - using steel
 - Solar energy
 - Green beans


 

      using steel   