Publicado por: pongpesca | 2019/10/22

Tiny shell fossils reveal how ocean acidification can cause mass extinction

A general view of a school of fish in a healthy coral reef off the coast of Isla Mujeres, Mexico on September 26, 2018.“(CNN) Ocean acidification caused a mass extinction of marine life 66 million years ago, research into tiny shell fossils has shown. This could have implications for the current climate crisis, which is also making the oceans more acidic.

Slightly less than 66 million years ago, a giant asteroid hit the earth near the Mexican town of Chicxulub, leading to massive tsunamis, earthquake-driven gravity flows and the ejection of molten rocks, according to a new paper published in the journal Proceedings of the National Academy of Sciences. This in turn caused acid rain and large scale acidification of the world’s oceans, prompting a mass extinction of most marine and land based life, including all dinosaurs.”

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Fonte: CNN, 22 de outubro de 2019.

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