There are five mass extinctions on Earth, which are the five times?

The first, at the end of the Ordovician period, 100 million years ago, about 85% of the species went extinct, the second, the Devonian mass extinction, the third Permian mass extinction, the fourth mass extinction, and the fifth Cretaceous end The age of dinosaurs ended.

There were five mass extinctions on Earth, namely: Ordovician mass extinction, Devonian mass extinction, Permian mass extinction, Triassic mass extinction, and the end Cretaceous dinosaur mass extinction.

The first mass extinction occurred at the end of the Ordovician period 100 million years ago. The second was the Late Devonian extinction event. The third was an extinction event between the Permian and Triassic periods. The fifth is what we know as it is in the late Cretaceous period, 66 million years ago.

The first mass extinction occurred 100 million years ago at the end of the Ordovician period, when more than 85% of the Earth's species were wiped out.

The second mass extinction occurred in the late Devonian period.

The third mass extinction, the end of the Permian period 100 million years ago, led to the end of the Permian period 100 million years ago.

The fourth mass extinction, the Triassic mass extinction, 200 million years ago, lasted 50 million years and the fifth mass extinction, which occurred 65 million years ago in the Cretaceous mass extinction, which caused the entire extinction of the dinosaur family.

It was because of the movement of tectonic plates, the impact of asteroids on the earth, volcanic eruptions, environmental damage, and the occurrence of **, which led to extinction.

The cause of the first extinction was the drastic cooling of the earth, the cause of the second extinction was the formation of acid rain by volcanic eruptions, and acid rain led to the extinction of organisms, the cause of the third extinction was the frequent occurrence of natural disasters, and these natural disasters led to the extinction of organisms, the cause of the fourth extinction was due to the lack of oxygen, and the fifth extinction was the extinction of organisms caused by meteorites hitting the earth.

The first could be a drop in temperature due to plate drift, or an ice period caused by an asteroid impact. The second occurred in a period of 100 million years ago, and the third occurred due to the continuous eruption of large volcanoes in the Siberian region of Russia. The fourth time is likely to be a volcanic eruption that causes a significant drop in temperature.

The fifth cause is likely to be an asteroid hitting the Earth.

Extinctions occur because of falling temperatures, volcanic eruptions, planets hitting the Earth, movement of the Earth's crust, and sea levels.

The Earth collides with other planets, the temperature of the Earth drops, the Earth's land changes, there is a lack of plants, volcanoes erupt, floods, and so it becomes extinct.

The first extinction was of marine life, when they were still the overlords of the earth, but because of the climate and environment, many of them became extinct. The second was the extinction of plants, the third was due to the movement of some plates, the fourth was some reptiles, and the fifth was dinosaurs.

The first was the extinction of marine life, the second was the extinction of plants due to climatic reasons, the third was the extinction of most organisms due to tectonic plate movements, the fourth was the extinction of reptiles, and the last was the extinction of dinosaurs during the age of dinosaurs.

The first was at the end of the Ordovician. Late Second Devonian. Event: Marine life has been wiped out. The third, at the end of the Permian. Fourth, late Triassic. Fifth Late Cretaceous.

I know that a mass extinction on Earth is the age of the extinction of the dinosaurs.

The first time should be the Jurassic period, the era when the dinosaurs became extinct.

Ordovician mass extinction, Devonian mass extinction, Permian mass extinction, Triassic mass extinction, Cretaceous mass extinction.

Extinction is also known as extinction. It is not always at a uniform speed.

, gradually, often with large-scale mass extinctions, i.e., mass extinctions of organisms. Organisms of the whole family, the whole order, or even the whole class can disappear completely in a very short time, or only a few remain. In the process of mass extinction, it is often the case that all species in the entire taxa, regardless of their position in the ecosystem, are not spared, and often many different groups of organisms go extinct together, but there are always other groups that survive, and some groups are born or begin to flourish.

Large-scale mass extinctions are cyclical, occurring once every 2,500 years, but mass extinctions have the greatest impact on animals, while mass extinctions of terrestrial plants are not as significant as those of animals.

Dinosaur ancient yak.

Ancient lizards. Man-eating birds, ancient crocodiles.