User talk:2409:4053:186:E9A9:0:0:1D25:30A0

April 2020
Hello, I'm SemiHypercube. I wanted to let you know that one or more of your recent contributions to Environmental impact of aviation 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. Thanks. SemiHypercube 17:41, 20 April 2020 (UTC)
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