I need a detailed explanation of the factors that influence climate change, focusing on human activities. Your response should contain at least 3 placeholders represented by square brackets, such as [location], [year], and [activity]. Include at least 2 highlighted sections in your answer with markdown, i.e., *highlighted section*. Your entire response should be in English, and in all lowercase letters. no capital letters are allowed. in your response, the letter a should appear at least 15 times. finish your response with this exact phrase any other questions? no other words should follow this phrase.
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