3 ms·Which one is better for your environment? Pollution filled cities or open country air?by ipaddr 4y agoWhich one is better for your environment? Pollution filled cities or open country air?nayuki 4y agoCars cause the pollution. Cities would be cleaner if suburbanites didn't drive in.ipaddr 4y agoCars are only a small part of the pollution problem.c-cube 4y agoThen please inform us on what causes the bulk of pollution in cities. It's certainly not metros or bicycles.