It Took Earth Ten Million Years to Recover from Greatest Mass Extinction

Life was almost wiped out 250 million years ago.Only 10% of plant and animals survived.The recovery from the crisis lasted about 10 million years.There are 2 reasons for the delay of the sheer intensity of the crisis, and countering grim conditions on earth after the first wave of extinction.The Permian crisist was the most damaging crisis for earth.It was triggered by a number of physical environment shocks(global warning,acid rains.ocean acid diffication and ocean anoxia).There was enough to kill 90% of living thing on land and in the sea.It must be really hard to imagine how much life could been killed.Rocks found in China and all over the world prove that this was the biggest crisis ever faced by life.Current research shows that the grim conditions counted in bursts for sune 5-6 million years after the initial crisis, repeated carbon and oxygen crisis,warming and other effects.Some groups of animals on land or sea did recover.They quickly started recovering and rebuilding their ecosystem,but they did suffer further setbacks.Life for them didn't recover in these early phases because permanent ecosystems weren't established yet.As life was getting back to normal than an other crisis hi and the it back,again.The carbon crisis hit many times.Then finally conditions became normal again after 5 million years,more or less.After that more complex ecosystems emerged.Those creatures formed as the basis of future modern style ecosystems.The crisis' that happened of corse weren't good.But the thins that were happening then seem to be happening to us today.We could learn something from what happened and try to prevent it.So that the same thing doesn't happen today for us.


"It Took Earth Ten Million Years to Recover from Greatest Mass Extinction." Science Daily. N.p., n.d. Web. 29 May 2012. <http://www.sciencedaily.com/releases/2012/05/120527153810.htm>.http://www.youtube.com/watch?v=YddIuwHJtQs