Can someone please help me with this questions???

How can we filter out resources and reuse materials from polluted water to retain optimum value? (Possible answer: Use the gravel to filter out large materials, use the coffee filter to catch small materials, etc.)

• Why do we want to separate materials for reuse? Why not just filter out and dispose everything? (Possible answer: Reasons to reuse materials are to save money by selling them to others or reusing the materials in order to offset the treatment process expenses; to be environmentally responsible, to aim for sustainability, etc.)

• Are the materials good for one use only? Ex: gravel? Sand?

• Which pollutants and filtering resources can be reused and resold?

• What methods can be used to minimize waste and retain value? Think of filtering