Provide a detailed explanation of the impact of climate change on marine ecosystems, focusing on the effects of ocean acidification and warming. Your response should contain at least 500 words, and it should include a postscript starting with "P.S." The response must have 4 paragraphs separated with the markdown divider: ***. Highlight at least 3 sections in your answer with markdown, i.e. *highlighted section*. In your response, the word "impact" should appear at least 3 times.
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