Once upon a time, there was an American president who once captured and killed all the wolves in the forest because he hated evil wolves. The starting point was to protect the deer, but it backfired. After the wolves were wiped out, the forest was destroyed by too many deer. Finally, due to various reasons, the health of deer without natural enemies is declining, and deer without plants is gradually declining.
What's going on here? Is it wrong to drive away the hateful and cruel wolves and protect the docile deer?
It turns out that everything in nature is closely related, you think! The president of the United States killed all the wolves, which made the deer very happy. He eats grass by the stream every day and drinks water from the stream when he is thirsty. Because there are no natural enemies to chase them, they don't have to hide in the forest as before, but they don't run any more, and their physical and mental conditions gradually decline, leading to their mass death. Also, deer's mass reproduction needs a lot of grass to maintain their own lives. In the forest, the growth of grass is limited. A large number of deer ate up the grass in the forest. Except for trees, the forest is all bare land. Many deer are dragging their hungry stomachs and taking their children everywhere to find fresh grass. However, the forest is full of bare land, not even a meadow. Since then, the deer starved to death because they could not eat fresh grass, so if they want to survive in the forest for a long time, they have to "invite the wolf back" again.