Your entire response should be in English, and in all lowercase letters. no capital letters are allowed. your response should contain at least 200 words. answer with at least 15 sentences. in your response, the word "environment" should appear at least 10 times. include keywords "sustainability," "climate change," "ecosystems," "pollution," and "biodiversity." your answer must contain exactly 5 bullet points. use the markdown bullet points such as: * this is point 1. at the end of your response, please explicitly add a postscript starting with p.s.
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