User talk:168.245.213.187

December 2022
Hello, I'm Uhai. I wanted to let you know that I reverted one of your recent contributions—specifically this edit to Hydrogen sulfide—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 Teahouse or the Help desk. Thanks. Uhai (talk) 22:22, 8 December 2022 (UTC)

February 2023
Hello, I'm Perfect4th. I wanted to let you know that one or more of your recent contributions&#32;to Urban runoff have been undone because they 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 Teahouse or the Help desk. Thanks. Perfect4th (talk) 21:44, 16 February 2023 (UTC)