The source of black carbon in the United States
A taste of the United States, the source of black carbon, is quite important in the academic world. Its sources are complex and related to people's livelihood, and the observation is essential to ecology and health.

One of the reasons for the generation of black carbon is the burning of fuel. In the past, the people of the United States mostly used firewood for cooking. In the stove, the flames were burning, and the firewood did not burn, so black carbon was generated. It drifted in the wind and spread in the four fields. Although a stove is small, it is also a major source of black carbon over the years.

Furthermore, the exhaust gas of car dealerships is also a major source of black carbon. The traffic of the United States is smooth, and the vehicles are like weaving. Gasoline and diesel fuel are burned in the engine, but they fail to fully melt, and black carbon is produced. On Tongqu Avenue, the traffic flow is endless, and the black carbon rises with the tail gas, rises in the air, gradually accumulates more and more, and dyes the atmosphere.

Industrial smelting is also to blame. In the factory and mine, the furnace stands tall, the fire is raging, and when the ore is refined, all the raw materials have not been refined, and the black carbon escapes. Chimneys stand, black smoke billows, and black carbon rises with the gas, causing the surrounding airspace and the surface to be dyed by it.

Wildfires occur frequently in mountain forests, which also add to the source of black carbon. Beauty has a vast mountain forest, which is set on fire due to drought, lightning or human carelessness. Grass and trees burn quickly, and black carbon is suddenly born, and it is dispersed with the wind, far away to other places.

The source of black carbon in the United States is to take multiple measures to control it. In people's livelihood, promote clean energy, reduce the burning of firewood; in transportation, promote new energy vehicles, reduce exhaust emissions; in industry, improve the technology of smelting and casting, reduce the escape of black carbon; in mountains and forests, strictly prevent fires, and eliminate the source of wildfires. In this way, the black carbon will gradually decrease, the sky will be clear and the ecology will be restored, and the people will be at ease.