Correção: The five biggest extintion

Since the life has taken up in Precambrian period, many lives have existed and extinguished from precambrian until the Anthropocene period. The first extintion was in Ordovician and Silurian period in 440 millions years ago, 60% of marine animals was effected and disappered, as well for plants and land-animals that vanished in great extintion. The reason was the inner geological movements, the melting glaciers occured, and as consequence the ocean's level increased. The second mass extintion was in Devonian period, it happend about 360 millions years ago. The reason was the glaciations, the whole world was freezing and the species that lived in warm areas were extinguished. After the Devonian period there were mississippian period, pennsylvanian period (first land-lifes), permian period, triassic period ( first Dinossaurs ), and so on. The third mass extiontion was in Permian and Triassic period, it happend around 250 millions years ago, this was one of the most impacted the world, 95% of species vanished. There two theories which might explain what happened. The first features an impact of an asteroid on the planet, the second, a volcanic eruption that affected oxygen levels In the atmosphere. The forth was Triassic and Jurassic period. With absence of evidence of catastrophic events at the time, is believed that has been caused by a volcano, dividing the supercontinent Pangaea. The fith and last mass extintion was in Cretaceous and Tertiary period, it was in 66 milions years ago. This event is the most famous because it caused the Dinosaurs extintion. The fifth and last mass extinction was in Cretaceous and Tertiary period, it was in 66 millions years ago. This event is the most famous because it caused the Dinosaurs extinction. Here, an impact of an asteroid on the earth ocurred. Tsumi, earthquakes, volcano erruption were some causes which contributed for the Dinos extintion, but the most reason as a toxic giant cloud which surrounded the whole planet preventing sunlight, the plants were dying and the Dinossaurs starving. These are the five mass extintions that occured in your planet.

Thank you in advance.

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Ordenar por: Data
Adicionei virgulas, troquei algumas palavras, adicionei palavras, apaguei algumas, corrigi certas palavras.
Não se pode escrever Earth (planet) com letra minuscula, não pode escrever Precrambian com letra miniscula. É bem provável que ache ainda alguns erros no texto, mas a maioria deles foram retirados. O texto está compreensivel. Bom, e só...

Since the life has taken up in Precambrian period, many lives have existed and extinguished from Precambrian until the Anthropocene period. The first extinction was in Ordovician and Silurian period in 440 million years ago, 60% of aquatic animals was affected and disappeared, as well for plants and land-animals that vanished in this great extinction. The reason was the inner geological movements, the melting glaciers occurred, and as consequence the ocean's level increased. The second mass extinction was in Devonian period, it happened about 360 million years ago. The reason was the glaciations, the whole world was freezing and its species that lived in warm areas were extinguished. After the Devonian period there were Mississippian period, Pennsylvanian period, Permian period, Triassic period (the first Dinosaurs), and so on. The third mass extinction was in Permian and Triassic period, it happened around 250 million years ago, this was one of the most impacted, 95% of species vanished. There are two theories that might explain what happened. The first features an impact of an asteroid on the planet, the second, and a volcanic eruption that affected oxygen levels in the atmosphere. The forth was Triassic and Jurassic period. With absence of evidence of catastrophic events at the time, it is believed that a volcano, dividing the super continent Pangaea, has caused the extinction. The fifth and last mass extinction was in Cretaceous and Tertiary period, it was in 66 million years ago. This event is the most famous because it caused the Dinosaurs extinction. The fifth and last mass extinction was in Cretaceous and Tertiary period, it was in 66 million years ago. This event is the most famous because it caused the Dinosaurs extinction. Here, an impact of an asteroid on the Earth occurred. Tsumi, earthquakes, and volcanoes’ attacks were some causes which contributed for the Dinos' extinction, but the most reason as a toxic giant cloud which surrounded the whole planet preventing sunlight, the plants were dying and the Dinosaurs starving. These are the five mass extinctions that occurred in our planet.
Thanks a lot for your help ^_^ I really apprechiate it!
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Corrigindo o título:

The five biggest extinctions
Daria boa também se ele muda-se o título para "Top five biggest extinctions". Daria ideia de um top 5.