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...make you feel sleepy or give you a headache. Nitrous oxides also cause smog . Exhaust fumes Lead is sometimes added to petrol...

... the main source of street-level pollution. The other is the regional smog problem (區域性的煙霧問題), which is caused by a combination of ...

...the troposphere ozone and the nitric acid peroxidation second grade □﹝ photochemical smog essential component ﹞ The hydrocarbon, the multi- links aromatic compound may...

... is local street-level pollution. The other is the regional smog problem. Diesel vehicles are the main source of street-level pollution...

... is also regional pollution. In Hong Kong, we get smog which comes from Guangdong , the region next to us. But...

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...energy, hydroelectric power, hyberid automobiles 2. Reduce the amount of smog forming particles and reduce the strain on the ozone eg: use lesser...

...industrial wastes polluted the lake. 6.If the vehicle fail on the smog check in California, they call it is a gross polluter vehicle. 7. ...