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Millions and millions of people around the world smoke cigarettes, and millions and millions of people are aware of the damage they have on their health. But we seem to forget the damage we are allowing these white sticks of plant and chemicals to have on the air around us. Like the chemicals of burning fossil fuels, cigarette smoke is also polluting the air the earth breathes.We also often forget the pollutants of room fragrances and perfumes. These unnatural products not only affect our own lungs, but also those of all the respiring beings on Earth. Just like the affect of butterfly wings on the weather, anything that is released into the air will also have an affect on the environment. I have often heard as defense to keep cars in the game that cows produce more pollution in the atmosphere through farting than all the cars on Earth do. Cows, however, do not naturally breed to the extent we have forced them to in recent years. And with the amount of bad food us humans eat, I’m sure humans produce far more noxious gases out of our rear ends than all the cows could possibly muster! 成千上万的世界各地的人们抽香烟，千百万人意识到他们对他们的健康有损害。但我们似乎忘记了伤害我们允许这些白棒厂和化学品对我们周围的空气。如化学品燃烧化石燃料，香烟烟雾也是空气污染地球呼吸。我们也常常忘记了污染物的房间，香水和香水。这些自然产品不仅影响自己的肺，也是所有地球上生命的呼吸。就象蝴蝶翅膀上影响天气，什么是释放到空气中也会有影响的环境。我经常听到国防车辆保持在游戏中的奶牛生产更多的大气污染通过放屁比汽车在地球上。奶牛，然而，不自然繁殖的程度上我们强迫他们近年来。和数量与我们人类吃坏的食物，我确信人类产生有毒气体的后端比所有的母牛可能鼓起！