Dinosaurs, as one of the most famous paleontologicals in the history of the earth, once occupied the earth for hundreds of millions of years. However, about 66 million years ago, the dinosaurs suddenly went extinct, and very cleanly and completely. So, why did the dinosaurs go extinct so cleanly and completely?
First of all, we need to understand the living environment and survival style of dinosaurs. Dinosaurs are a class of reptiles that live mostly in swamps, lakes, and land. Their bodies are huge, some even reach tens of meters high, and their weight is also very amazing. This size made dinosaurs need a lot of food to stay alive. At the same time, dinosaurs reproduced relatively slowly, and it took a longer time for the cubs to grow into adult dinosaurs.
Before the extinction of the dinosaurs, there was a very large natural disaster on Earth, the meteorite impact on the Earth. Scientists believe that this event has had a huge impact on the Earth's climate and environment. A large number of volcanic eruptions, tsunamis, and other natural disasters followed, which posed a great threat to the survival of dinosaurs.
The meteorite impact event on the Earth has caused a dramatic change in the Earth's climate. The temperature of the Earth's surface has dropped dramatically, and the amount of oxygen in the atmosphere has also decreased dramatically. These changes made the living environment of dinosaurs more and more harsh. Due to their large size, dinosaurs needed a lot of food to stay alive. However, due to changes in the environment, many plants began to wither and die, and the dinosaurs' food** became less and less. At the same time, the population of dinosaurs began to decline sharply due to the slower rate of reproduction.
In addition to meteorite impacts on Earth, scientists have proposed other reasons that may have led to the extinction of the dinosaurs. For example, climate change, disease, competition, and many more may have contributed to the extinction of dinosaurs. However, none of these reasons can fully explain why the dinosaurs went extinct so cleanly and completely.
To sum up, the reasons for the extinction of dinosaurs are manifold. Meteorite impacts on Earth events are one of the main causes of dinosaur extinction, but other factors may have played a role. Whatever the reason, the extinction of the dinosaurs was a huge change for the Earth's ecosystem. Since the extinction of the dinosaurs, the Earth's ecosystems have gradually changed, and many new species have begun to emerge and gradually become dominant.