How to reduce the composition buried in fog in the fourth grade of primary school

How to reduce the composition of fog burial

I found it foggy outside in the morning, and I couldn't even see the mountains clearly. The sun lazily hid under the covers and refused to get up, so the visibility was very low. Turn on the TV, and the news is talking about it. It turns out that schools in Nanjing, Anhui and other areas have been closed because of the foggy weather these days, and Hangzhou has also stopped all outdoor activities of students. Everyone wears a mask when they go out.

I was surprised and ran to ask my mother. My mother told me: "What people usually say about smog is actually composed of fog and haze. The foggy weather looks like fog, but it's actually very different. Fog is formed by the condensation of water vapor in the ground air, while haze is caused by tiny dust particles, fine sand particles and virus particles suspended in the air evenly, and they are intertwined to form haze weather. This kind of weather is very harmful to human body. If we inhale these bacteria and viruses, we will easily get sick and die in severe cases. "

As far as I know, smog weather is caused by secondary pollution, such as automobile exhaust and factory exhaust. Therefore, in addition to reducing outdoor activities and drinking more boiled water, we should also protect the environment, care for our homes and keep the foggy weather away from us.