Provide a detailed explanation of the process of photosynthesis, ensuring your response is at least 500 words long. Your ENTIRE response should be in English, and in all lowercase letters. no capital letters are allowed. highlight at least 3 sections in your answer with markdown, i.e. *highlighted section*. include keywords *chloroplasts, carbon dioxide, sunlight, glucose, oxygen*. at the end of your response, please explicitly add a postscript starting with *p.s.*.
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