The document discusses proper refuse classification and disposal. It defines refuse as disposable materials, both recyclable and non-recyclable. There are three main classifications of refuse: garbage, rubbish, and ashes. Garbage includes food waste; rubbish is combustible materials like paper or non-combustible items like glass; and ashes are residue from fires. The document encourages students to promote proper refuse disposal through household habits, school initiatives, or community work, and stresses that healthy environments benefit public health.