What was the cause of the extinction of the dinosaurs, was it because of the climate at that time, t

Now scientists have not confirmed the class!

65 million years ago, the dinosaur family disappeared from the earth in an instant, and it was not necessarily a meteorite impact that caused this tragedy, scientists have made a new discovery!

Yes, dinosaurs lived from the Triassic to the Cretaceous of the Mesozoic Era and became extinct at the end of the Cretaceous period, 65 million years ago.

Scientists say that at the end of the Cretaceous period, the earth's climate and environment changed dramatically, the climate became colder, precipitation decreased, causing a large area of forest to disappear, grasslands and deserts appeared, and the dinosaurs could not adapt to the changed climate and natural conditions.

In addition, 65 million years ago, an asteroid with a diameter of about 10 kilometers hit the earth, and a large amount of dust entered the atmosphere, blocking the sunlight and causing the temperature to drop sharply. At the same time, it also triggered a large-scale ** volcanic eruption, bringing a large amount of toxic gases. As a result, the dinosaurs quickly became extinct.

The main points are as follows:

1. Climate change theory.

65 million years ago, the Earth's climate changed dramatically, and the temperature dropped dramatically, causing the oxygen content of the atmosphere to drop, making it impossible for dinosaurs to survive. It is also believed that dinosaurs were cold-blooded animals with no hair or warm organs, unable to adapt to the drop in the earth's temperature, and were frozen to death.

2. Volcanic eruption theory.

Because of volcanic eruptions, carbon dioxide.

A large amount of spewing out causes the greenhouse effect of the earth's rapid surge, causing food to die. Moreover, volcanic eruptions cause a large amount of salt to be released, the ozone layer.

Cracked, harmful ultraviolet rays irradiate the earth's surface, causing the extinction of living things.

3. Orogenic Movement.

The orogeny that took place at the end of the Cretaceous period dried up the swamps, and many of the dinosaurs that called the swamps home were no longer able to live. Because of the changes after the qi, the plants also changed, and the herbivorous dinosaurs could not adapt to the new food, and they became extinct one after another. The herbivorous dinosaurs went extinct, and the carnivorous dinosaurs also lost their grip and became extinct as a result.

This extinction process lasted between 10 million and 20 million years. By the end of the Cretaceous period, it was finally extinct on the earth.

It's because of the ecological environment.

The real reason for the extinction of the dinosaurs! Is the sixth mass extinction now?

Yes, the extinction of the dinosaurs is linked to climate change. According to scientific research, about 65 million years ago at the end of the Cretaceous period, the Earth experienced a huge climate change event called"Cretaceous-Tertiary extinction events", also known as the Dinosaur Extinction Event. This event led to the extinction of dinosaurs and other creatures on most of the planet.

Climate change was one of the key factors in the event. It was a time of massive volcanic eruptions, volcanic activity, and rapid changes in the global climate. These activities release large amounts of carbon dioxide and other greenhouse gases, which have led to rising global temperatures and drastic changes in the climate.

This climate change has had a huge impact on the habitat of dinosaurs and other creatures, including reduced food resources and altered ecosystems.

In addition, the event may have triggered other chain reactions, such as acid rain, rising sea levels, and the destruction of terrestrial and marine ecosystems, further exacerbating the extinction of the dinosaurs. However, it should be pointed out that climate change is only one of the many factors that led to the extinction of the dinosaurs, and other factors such as meteorite impacts and disease transmission also played a role in their extinction.

According to the most popular theory, the extinction of the dinosaurs was caused by the impact of a huge asteroid on the Earth 65 million years ago.

The cause of the extinction of the dinosaurs is still being studied. For a long time, there was an authoritative opinion that the extinction of the dinosaurs was related to a large meteorite 65 million years ago.

According to research, there was an asteroid with a diameter of 7-10 kilometers that fell on the surface of the earth, causing a large **, throwing a large amount of dust into the atmosphere, forming a dust fog that obscured the sky and the sun, causing the photosynthesis of plants to temporarily stop, and the dinosaurs became extinct.

Fossil research

The discovery of dinosaur fossils has a long history. Long before the discovery of dinosaurs, Europeans knew that there were many huge fossilized bones buried in the ground. It wasn't until paleontologist Mantel discovered the dinosaur and compared it to the iguana that the scientific community preliminarily determined that it was a group of reptiles that resembled lizards but had long since become extinct.

Dinosaur fossils can be roughly divided into two types: skeletal fossils and scar fossils, which are mainly preserved in sedimentary rocks formed during the Mesozoic era. The formation of dinosaur fossils is a complex, long and mysterious process, which involves the death and extinction of dinosaurs, and is also closely related to the vicissitudes of the earth for hundreds of millions of years, and its discovery and excavation are also not easy.