What are the main benefits of using renewable energy sources, and how do they contribute to reducing carbon emissions and combating climate change? Your response should contain at least 4 sentences and less than 8 sentences. Highlight at least 2 sections in your answer with markdown, i.e. *highlighted section*. In your response, the word *renewable* should appear at least 2 times. Include keywords *sustainable*, *environmental*, *pollution*. At the end of your response, please explicitly add a postscript starting with P.S.
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