In some cities, especially in summer, it is unhealthy to breathe the outside air. We know that we must reduce automobile exhaust pollution, factory exhaust pollution and power plant air pollution to ensure modern life. Yes, we all know, but do you know what role biodiversity plays in automatically cleaning the environment? Do you know that biodiversity helps to purify the air?

Trees and other green plants inhale carbon dioxide, a greenhouse gas mainly produced by automobile exhaust and factory emissions, and then reduce it to natural pure oxygen. Biodiversity is the air purifier of this world.

However, we continue to cut down trees and transport them everywhere. There are 492 species of trees in the world that are endangered. We have cut down about half the trees used to decorate the earth. We cut down but don't repair it, which has hurt the lungs of the earth. Just like an addict who smokes 10 packs of cigarettes a day, he keeps smoking, and his damaged lungs are cut off one by one. How big are our lungs left?

In addition, in many places, we introduce alien invasive species. In the past 200 years, we have transported some tree species from one end of the world to the other. Some of this behavior has developed to the scale of an industry, such as eucalyptus and rattan. There are also some retirees or travelers who bring native plants or trees from their hometown and travel together.

The problem is that these plants are completely adapted to the original growing place, but they are not adapted to the new growing place. They may need more water than local species, or need pesticides to help them not be eaten by local insects.

We must respect the arrangement of nature and cannot force certain characteristics to change. In this way, let nature take its course, and the lungs of the earth can breathe more comfortably.