These days, the weather forecast reports about fine dust. Fine dust is the dust that has very small particles. It contains heavy metals and many bad materials. People are worried because of fine dust. The concentration of fine dust is getting higher and higher. That's why people wear masks. If a person is exposed to fine dust for a long time consistently, it can cause some diseases. To avoid those diseases, we should wear masks. Also, the elderly and children should reduce the amount of time they spend outdoors. This is one way to avoid diseases, but we should try to make a clean world and live an eco-friendly life.
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