There is a saying that one thing brings down another thing.
That is to say, every species should have a natural enemy.
The species died because of his natural enemies.
And his natural enemies also exist because of this species.
When one party disappears, the other party has no meaning of existence.
Mutual struggle and interdependence, opposition and unity, this is what survival is all about.
P. S I am an honest person, and I honestly say that this article will be a short story. = =