Fact 1: Recycling reduces the resources needed to make something.

Fact 2: Recycling also saves energy.

Given the two facts above, answer the question "What reduces the resources needed to make something?" with the following options: 
- water conservation
 - A computer
 - saving energy
 - Pollution
 - electron microscope
 - power stations
 - Fuel cells
 - Electrical energy


 

   saving energy      