How did the dinosaurs go extinct?65 million years ago, it suddenly disappeared, who is the culprit

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Most scientists are not entirely sure when dinosaurs appeared. It is generally believed that dinosaurs appeared 250 million years ago.

Because today, when we judge the age of prehistoric creatures, we actually rely on the strata where fossils existed.

But there is still a big mystery for the dinosaurs.

Were dinosaurs homeotherms or cold-blooded.

Most species of dinosaurs were huge, but there are still relatively small species.

Therefore, scientists speculate that some are cold-blooded animals and some are homeothermic animals.

But it is also an unsolvable mystery that the same species possesses these completely different characteristics.

There are several speculations about the extinction of the dinosaurs.

65 million years ago, an asteroid with a diameter of 15 kilometers struck the Earth and crashed into present-day Mexico.

This is because the speed at the time of impact reached 20 kilometers per year, and the energy generated was one billion times that of the Hiroshima atomic bomb. A terrible tsunami was created that wiped out all life on Earth.

Moreover, the Mexican rock formations are rich in gypsum, and the heat generated by the asteroid impact burns the gypsum to produce large amounts of sulfur. It made the atmosphere very turbid.

The sun didn't shine in, and it was raining acid all the time. Allowing plants on the surface to survive has caused the extinction of a large number of species.

This asteroid impact not only wiped out the dinosaurs, but also became known by scientists."The fifth mass extinction on Earth

Because after the extinction of the dinosaurs, there was a paradise for mammals. Therefore, some scientists believe that it must have been because of the large number of mammals at that time, which posed a huge threat to the hatching of dinosaurs.

Nowadays, the Earth's magnetic poles are very stable. Some scientists have speculated that there may also be a cause for the sudden shift in the Earth's magnetic poles. If the magnetic poles are exchanged, the earth will be irradiated by the solar wind to the surface for a moment, causing a mass extinction.

However, it is generally accepted that the asteroid impact theory is more in line with the cause of the extinction of the dinosaurs.

In addition to the mystery of the extinction of the dinosaurs, there are many other unsolved mysteries.

The body skeleton of the dinosaur excavated so far is too large, and the legs that support the body cannot support such a large body in terms of skeleton, etc.

For the study of dinosaurs, I believe that scientists will give more satisfactory answers in the future.

Personally, I think it was the extinction of the dinosaurs caused by the sudden increase in the earth's gravity, the earth's gravity was definitely not as big as it is now, or how could the animals at that time grow so big, after the earth's gravity increased, the dinosaurs must be so big that they can't stand it, at least the heart blood vessels can't bear so much pressure, so they suddenly become extinct. Of course, this planet hitting the earth must also be related, otherwise the earth's gravity would suddenly increase. If you look at the animals that survived at that time, they were all reptiles such as snakes, which in turn shows that it has something to do with gravity, because they are all animals that live close to the ground---.

When I was listening to Professor Ouyang Ziyuan's lecture this year, he said that the latest theory is that meteorites hit the coastal areas of Mexico and caused climate and other problems that led to the extinction of the dinosaurs.

Probably because many claims have not been proven, it is possible to have either one.

Because no one can give the most accurate answer.