User talk:5.55.152.73

May 2021
Hello, I'm NonsensicalSystem. An edit that you recently made to Isotope fractionation seemed to be a test and has been reverted. If you want to practice editing, please use the sandbox. If you think a mistake was made, or if you have any questions, you can leave me a message on my talk page.    NonsensicalSystem (error?)(.log) 10:00, 20 May 2021 (UTC)