There are many theories as to what caused the extinction of 90 percent of all species on earth about 252 million years ago. Some say it was volcanoes others argue that it was a giant astroid. New research conducted at MIT suggests that microbes were responsible for the mass extinction. The theory states that the extinction was caused by a microbe that produced methane called Methanosarcina. The article states that methane spread into the oceans and then the atmosphere, rapidly influencing climate change. The theory finally suggests that volcanic eruptions aldo could have been a factor. The author employed good use of ethos by quoting work from MIT researchers. I found this article to be interesting but I would have liked if the article had talked more about Methanosarcina which was said had caused the mass extinction.
http%3a%2f%2fwww.universityherald.com%2farticles%2f8526%2f20140401%2fmit-researchers-believe-microbes-caused-the-earths-mass-extinction-252-million-years-ago.htm
What do you think about this new research versus the previous theories?
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