The earth is a living planet. In the long evolutionary history and life evolution of billions of years, there are many different kinds of creatures. In different times, there will be a hegemonic creature. For example, in the era of giant worms more than 200 million years ago, insects were huge and ruled the earth. After the fourth extinction, a new dominant dinosaur appeared.
I believe many people know dinosaurs. Although dinosaur fossils have never been seen before, they have been found all over the world. Scientists have restored some real faces of dinosaurs through bone restoration and computer. In our eyes, dinosaurs are huge and incomplete creatures, and humans standing in front of them are as small as ants. Even such a super overlord, after living on the earth for10.60 billion years, suddenly disappeared 65 million years ago.
The huge shock wave shook the earth's crust and triggered a large-scale volcanic eruption. Dust and gas covered the sky and released a lot of carbon dioxide into the atmosphere, causing the earth's temperature to rise rapidly and briefly. The ground is covered with dust, blocking the sun. The temperature of the earth rose and then began to drop sharply. For dinosaurs, the huge cold difference effect of the environment is too great. Remember, dinosaurs didn't have thick hair protection, so they were less resistant to extreme temperature changes. At the same time, without sunlight, plants could not carry out photosynthesis and began to die in large numbers. Without plants, herbivores become extinct, and finally carnivores become extinct. Without these foods, dinosaurs began to starve to death. The theory that the impact of asteroids led to the extinction of dinosaurs seems reasonable. Scientists found a huge crater on the earth, which was probably left by an asteroid impact.