What Is The Real Reason For The Extinction Of Dinosaurs?
In the Mesozoic era more than 200 million years ago, a large number of reptiles lived on land, so the Mesozoic was also known as the "reptile era", and the earth was widely occupied by vertebrates for the first time. At that time, the earth's climate was warm, and there were dense forests everywhere. The reptiles had enough food and gradually flourished and the variety became more and more. They are constantly different into different kinds of reptiles, some become today's turtles, some become today's crocodile, some become today's snakes and lizards, and one of them It has evolved into a mammal that is today in the world.
Dinosaurs are the most versatile of all reptiles. They are ideal for living in swamps and shallow lakes. The air is warm and humid, and food is easy to find. So the dinosaurs ruled on the earth for tens of millions of years, but for some reason, they suddenly became extinct in a very short period of time 65 million years ago. Today, people only see a large number of dinosaur fossils left at that time. So why is the dinosaur extinct? The Animal Costume Manufacturer has access to the information and some results can be shared with you.
The reasons for the extinction of dinosaurs are still being studied. For a long time, the most authoritative view is that the extinction of dinosaurs is related to a large comet 65 million years ago. According to the study, at that time, an asteroid with a diameter of 7-10 km fell on the surface of the earth, causing a big explosion, throwing a large amount of dust into the atmosphere, forming a dust-covered fog that caused the plant to stop temporarily. The dinosaurs were extinct.
Animatronic Dinosaur
The theory of asteroid impact has quickly gained the support of many scientists. The fact that a comet crater occurred in the Yucatan Peninsula of Mexico in 1991 has further confirmed this view. Today, this view seems to be conclusive.
But many people are skeptical about this asteroid impact theory because the facts are that frogs, crocodiles, and many other temperature-sensitive animals have survived the Cretaceous. This theory cannot explain why only dinosaurs are dead. We can only see the Dinosaur Park Animatronic Dinosaur. So far, scientists have put forward more than a dozen hypotheses about the causes of dinosaur extinction. The more stimulating and dramatic "comet collision" is just one of them.
In addition to the "comet collision theory", the main points of view on the extinction of dinosaurs are as follows:
First, the climate change said. 65 million years ago, the earth's climate changed abruptly, and the temperature dropped drastically, causing the oxygen content of the atmosphere to drop, making the dinosaur unable to survive. Others believe that dinosaurs are cold-blooded animals with no hair or warm organs, unable to adapt to the decline in the temperature of the earth, and are frozen to death.
Second, the species struggle said. At the end of the dinosaur era, the first small mammals appeared. These animals are rodent carnivores and may feed on dinosaur eggs. Because this small animal lacks natural enemies, more and more, eventually ate the dinosaur eggs.
Third, the mainland drift said. Geological studies have shown that in the era of dinosaurs, there is only one piece of the earth's continent, namely the “pan-ancient land”. Due to changes in the earth's crust, the continent's large division and drift in the Jurassic period eventually led to changes in the environment and climate, and the dinosaurs became extinct.
Fourth, the geomagnetic change said. Modern biology has shown that the death of certain organisms is related to magnetic fields. Creatures that are sensitive to magnetic fields can cause extinction when the Earth's magnetic field changes. It follows that the extinction of dinosaurs may be related to changes in the Earth's magnetic field.
The hypothesis about the cause of dinosaur extinction is far more than the above. But these kinds of hypotheses have more supporters in the scientific community. Therefore, the real cause of the extinction of dinosaurs remains to be further explored. Nowadays, people can only see this kind of Animatronic Dinosaur in museums and theme parks. This is also a kind of learning.
