User talk:MynamesJeff21Jumpstreet

Recent edit to Sinkhole
Hello, and welcome to Wikipedia. I noticed that you made a change to an article, Sinkhole, but you didn't provide a reliable source. It's been removed 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 the referencing for beginners tutorial, or if you think I made a mistake, you can leave me a message on my talk page. Thank you! Materialscientist (talk) 11:34, 16 September 2016 (UTC)

Recent edits to Sinkhole
Hello, and thank you for your recent contributions. I appreciate the effort you made for our project, but unfortunately I had to undo your edits because I believe the article was better before you made that change. Feel free to contact me directly if you have any questions. Thank you! Dstone66 (talk) (contribs) 04:37, 17 September 2016 (UTC)