The document introduces three 12-year-old students - Adriana, Elena, and Xavier - and discusses their green habits and motivations. Adriana loves nature and recycles paper, plastic, and organic materials. Elena's family recycles water and paper, plastic, and glass, while she recycles those materials plus batteries, aluminum, and ink cartridges. Xavier aims to not pollute and his family recycles cold water and reused paper, plastic, and glass.