Tendencias21

Acid raid, ozone depletion contributed to ancient extinction

Around 250 million years ago, at the end of the Permian period, there was a mass extinction so severe that it remains the most traumatic known species die-off in Earth’s history. Some researchers have suggested that this extinction was triggered by contemporaneous volcanic eruptions in Siberia. New results show that the atmospheric effects of these eruptions could have been devastating.

Fuente : http://www.eurekalert.org/pub_releases/2013-11/ci-…

RedacciónT21

RedacciónT21

Hacer un comentario