This is pretty easily google-able stuff. Here's the Mars 2020 mission environmental impact report, for example. https://www.nasa.gov/sites/default/files/files/

This is pretty easily google-able stuff. Here's the Mars 2020 mission environmental impact report, for example. https://www.nasa.gov/sites/default/files/files/Mars2020_Section4.pdf https://www.nasa.gov/sites/default/files/files/Mars2020_Sect...