Volcanic eruptions that depleted ocean oxygen may have set off the Great Dying

Science News | 12/6/2018 | Carolyn Gramling
joseph76 (Posted by) Level 3
Click For Photo: https://www.sciencenews.org/sites/default/files/2018/12/main/articles/120518_CG_permian-hypoxia_feat.jpg

C. Gramling. Ancient ozone holes may have sterilized forests 252 million years ago. Science News Online, February 12, 2018.

T. Sumner. Volcanic activity convicted in Permian extinction. Science News. Vol. 188, September 19, 2015, p. 10.

D - Powell - Calcium - Clues - Mass

D. Powell. Calcium offers clues in mass...
(Excerpt) Read more at: Science News
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