This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Methane. en Methane concentration in the atmosphere as measured at the Mauna Loa Observatory ppb esrl noaa gov NOAA PDUSGov Mauna Loa Observatory North West Methane Greenhouse gases Earth's atmosphere
Page 2023 Free-images.com. All images are Public Domain