1 - Air pollution in cities causes respiratory problems, making it hard to breathe., 2 - The problem of pollution is getting worse as more people use cars and industrial emissions increase., 3 - People must be more aware of their role in reducing pollution by using eco-friendly transportation., 4 - One solution is to plant more trees to absorb carbon dioxide and purify the air., 5 - Governments could implement stricter environmental policies to limit emissions from factories.,

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