Why is the Permian extinction considered the worst In Earth's history, and how do scientists think it happened? What organisms flourished afterit?Be specific. 0/10000 Word Umit

## Step 1<br />The Permian extinction, also known as the "Great Dying", is considered the worst extinction event in Earth's history. This is due to the fact that it resulted in the extinction of approximately 90% of all marine species and 70% of terrestrial vertebrate species. This event occurred approximately 252 million years ago, marking the end of the Paleozoic Era and the beginning of the Mesozoic Era.<br /><br />## Step 2<br />The exact cause of the Permian extinction is still a subject of debate among scientists. However, several theories have been proposed. These include volcanic eruptions, climate change, and the release of methane from the ocean floor. These events could have led to a significant drop in oxygen levels, which would have been fatal to many species.<br /><br />## Step 3<br />After the Permian extinction, the Earth's biosphere was largely empty. This allowed for the evolution and diversification of new species. The first organisms to flourish after the Permian extinction were primarily marine invertebrates, such as trilobites and brachiopods. These organisms were able to adapt to the new conditions and fill the ecological niches left vacant by the extinct species.