May 2019 change
Hello, I'm 94rain. I noticed that you made a change to an article, Fossil fuel, but you didn't provide a reliable source. It's been removed and archived in the page history for now, but if you'd like to include a citation and re-add it, please do so! If you need guidance on referencing, please see Wikipedia:Citing sources, or if you think I made a mistake, you can leave me a message on my talk page. Thank you. Please keep in mind that blogs are unreliable sources. Thank you! 94rain Talk 06:54, 3 May 2019 (UTC)
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