Dinosaurs are "giant" species on the earth and should have strong vitality. But it was extinct a long time ago. Now all we can see are dinosaur fossils and models. Many scientists in the world want to find out the reason of dinosaur extinction through the clues left by dinosaurs. But the extinction of dinosaurs remains a mystery.

Some scientists believe that dinosaurs were poisoned by eating poisonous flowers and plants:/kloc-0.2 billion years ago, some flowering plants often contained strong alkaloids, and some alkaloids were very toxic. After dinosaurs ate a lot of alkaloids, the toxin reaction led to serious physiological disorder and death. Some scientists believe that the extinction of dinosaurs was caused by volcanic eruption caused by asteroid impact: about 65 million years ago, a huge asteroid or comet fell from the sky and crashed into the earth at a speed exceeding 10 km per second. The powerful explosion shock wave swept half the earth, and most dinosaurs were wiped out. After the shock wave, the global fire and high temperature caused by the explosion made some. ...