Permian Triassic Extinction

I'm going to talk about the geologic evidence of the permian triassic extinction. This is a volcanic scenario. There are different geologic reasons for the permian triassic i'm going to tell you about them . During this period there has been documented changes in the air. The atmosphere went evey high which means high levels oxygen was about 30%. When it was low it was about 15%.

In this time the salinity in the sea was filled with sharply during the period about 250 million years ago when it was the end of this period something killed 90% of everything. That is a lot of organisms if you think of it. Most of all the trees died. The trees did not have water . During the organic matter was the land flooded in the seas and they pulled oxygen from the water. It leaves in anoxic at all the levels. Anoxic is a leave a from oxygen og the hypoxia or a low oxygen. It is in seawater, freshwater ,or in groundwater. …show more content…
The short team for (SOx) it cools the earth while it it's a longer term is (CO2) that well warm it up. There is many other volcanic gases. They are destroyed and the ozone layer. There is more they are magma rising in the coal beds. Did you know that greenhouse gas was in there. So there is so many gases. I told you about some of them. Like sulfur,volcanic, greenhouses ,and magma coal beds. There was saltwater in the gases to. The animal species was a great natural disaster in the earth. 250 million years ago the permian period something killed 90 % of the animals. Less than 5% of the animals that lived in the sea survived. That's a lot of animals that we lost we were lucky that we didn't lose all of them. In land most of them made it. There was a large amount like a third animals. That's not to mush that died. There was thing called the black triangle it was the best place. It still is the best place