as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
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provide three suggestions for reducing air pollution.
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1. increase the use of renewable energy sources such as solar, wind, and hydropower. 
2. improve public transportation systems and encourage carpooling.
3. implement stricter regulations on the manufacturing and use of polluting substances.
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