Common examples of filtration include making tea with a strainer to keep leaves out of the cup, using a HEPA filter in a vacuum cleaner to trap dust, and breathing through a mask to block airborne particles. In nature, kidneys filter blood to remove waste products, and wetlands filter pollutants from runoff water. Industrial examples include oil refineries filtering crude oil and pharmaceutical companies sterilizing medicines. Household water filters remove chlorine and sediment, while pool filters keep water clear. Air purifiers in homes remove allergens like pollen and pet dander. Even simple activities like draining pasta water through a colander are forms of filtration. These examples illustrate how filtration is integral to daily life, health, and industry, serving to separate unwanted solids from fluids to ensure cleanliness, safety, and functionality in various systems and processes we rely on every day.
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