i might be incorrectly remembering this from one if bio classes, but one professor mentioned the development of oxygen in our atmosphere resulted in one of the massive die offs, but the main thing i remember about oxygen ia that it is an electron theft
published on: 2015-06-01 02:30:37
gallifreyinfinite.tumblr.com/post/120386527475/
baerito: when you finally come out of your room
gallifreyinfinite.tumblr.com/post/120419837050/
mattymurrdick: vinebox:THIS IS THE SMOOTHEST THING I’VE EVER
Marie Chambers
murrddocks-blog: insp.