Oxygen-Free Condition Preserves Fossils on Mars.

For billions of years, Mars has very little oxygen gas (note 1), so the condition helped to form and preserve fossils on Mars (note 2).

Note 1: [link to marsed.asu.edu (secure)]
Note 2: "Organic matter and pyrite occur together in the same rock because both need oxygen-free conditions for their formation." quoted from [link to www.sandatlas.org (secure)]

Last Edited by Faceless2 on 09/20/2020 05:38 AM