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, some dinosaurs were burned to death and roasted to death by the global fire and high temperature caused by the explosion. Later, the temperature plummeted and the acid rain got wet, and the last dinosaur was buried in this extremely harsh environment.

No matter what causes the extinction of dinosaurs, the principle is the same, that is, the living environment has changed greatly, and it is no longer suitable for dinosaurs to survive, which eventually leads to the extinction of dinosaurs. The extinction of dinosaurs reminds us of the extinction of other species on earth, so why didn't they? With the continuous destruction of the earth's environment, natural disasters such as floods, earthquakes and tsunamis occur frequently, and the living environment of human beings is facing serious threats. If it is not stopped.