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As early as 13.8 billion years ago, the universe to the explosion implied that there will be many species on the earth that will continue to extinct and there will be a lot of species rebirth, as for when the sixth species extinction is, we can't be sure, if we can be sure, then we won't let it go extinct, we know that the current giant panda is an endangered animal, there is really a sixth mass extinction, maybe it is the giant panda!
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There have been five mass extinctions on Earth, both extinct and new, and the timing of the sixth occurrence is uncertain, and it is uncertain which organisms will become extinct.
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In fact, the sixth extinction of organisms has always been in progress, but the sixth extinction is different from the first five, not to disappear many organisms at one time, but to have been extinct organisms, which is a slow process, and there are relatively few extinct organisms, these organisms will become extinct because human beings have destroyed their living environment, and the extinction is also a very small number of rare animals.
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We don't know when the sixth mass extinction will happen, and we don't know which creatures will be affected, but I think the first five mass extinctions are a reminder from nature to us.
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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.
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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.
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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.
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I know that a mass extinction on Earth is the age of the extinction of the dinosaurs.
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The first time should be the Jurassic period, the era when the dinosaurs became extinct.
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Ordovician mass extinction, Devonian mass extinction, Permian mass extinction, Triassic mass extinction, Cretaceous mass extinction.
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.
When it comes to mass extinctions on Earth, we often think of the dinosaur extinction 65 million years ago. But since the birth of the earth, in addition to the mass extinction of dinosaurs, the earth has experienced several mass extinctions.
This possibility is not impossible, the more advanced industrial science and technology, the greater the threat to living beings, the exploitation of natural resources by human beings has reduced the living place of these organisms, human deforestation, animal hunting, are destroying the balance of organisms, human beings and organisms, climate are closely related, human changes to the environment, will inevitably bring various disasters to our lives.
30 trillion years thousand. Thank you. Satisfied.
Top 10 Astronomical Wonders: Maybe You Won't See It Once in Your Life (Part I).