Your response should contain at least 4 sentences. The response must contain at least 2 placeholders represented by square brackets, such as [address]. Include the keywords [environment, impact] in the response. In your response, the word [impact] should appear at least 3 times. At the end of your response, please explicitly add a postscript starting with [P.S.]. Your entire response should be in English, and in all lowercase letters. no capital letters are allowed.
user