User talk:81.155.69.90

Please refrain from adding nonsense to Wikipedia, as you did to carbon dioxide. It is considered vandalism. If you would like to experiment, use the sandbox. Deli nk 17:30, 17 October 2006 (UTC)

January 2021
Hello, I'm Materialscientist. I wanted to let you know that I reverted one of your recent contributions—specifically this edit to Luz Long—because it did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Help desk. Thanks. Materialscientist (talk) 15:57, 15 January 2021 (UTC)
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