Why is the Amazon rainforest called "the lung of the earth"?

We know that the lungs are used for breathing, and the Amazon rainforest has become a lung, which shows that the rainforest carries the function of the earth's breathing. There are several reasons for this.

In fact, no matter rain forest, forest or forest, as long as plants have photosynthesis, plants can absorb carbon dioxide and produce oxygen through photosynthesis, which is just the opposite of the process of animal breathing. Animals absorb oxygen and produce carbon dioxide. If there are no plants on the earth, there will be no oxygen on the earth, and mankind can only go extinct. This shows the importance of plants on the earth.

It's just that the amount of oxygen produced by a plant is limited. Amazon can be called the lung of the earth because it has many plants and all kinds of plants. Amazon rainforest accounts for half of the world's rainforests and one-fifth of the world's forests. Considering that so many plants gather together, the amount of oxygen produced will be huge.

The Amazon rainforest produces one-tenth of the world's oxygen. Everyone on the earth is breathing oxygen produced by the Amazon rainforest. It not only produces oxygen, but also undertakes the function of purifying air. If the Amazon rainforest disappears, the oxygen on the earth will become very thin, and everyone will live as if they were on Mount Everest.