Give two possible reasons proposed for the massive extinction that occurred at the end of the Paleozoic Era.

There are many subsections in the Paleozoic Era, breaking up the millions of years into smaller chunks. The end of the Paleozoic era is called the Permian era. This era saw numerous climate changes along with fluctuations in the carbon dioxide and oxygen levels. There are numerous hypotheses about what caused the extinction at the end of the Permian era, including the sea venting hydrogen sulfate, a huge meteor in Antarctica or even all of the possibilities combined into one