I need to write a short essay on the importance of recycling. The essay should have at least 3 paragraphs and each paragraph should be separated by a markdown divider: ***. The essay must contain at least 200 words but no more than 300 words. Highlight at least 2 sections with markdown, i.e., *highlighted section*. Include keywords: *environment, waste, resources, sustainability, landfill*. At the end of the essay, please explicitly add a postscript starting with "P.S.".
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