The Amazon Plain in Brazil is the largest plain in the world. It is home to the world's largest tropical rainforest. Through photosynthesis, it continuously absorbs carbon dioxide and replenishes oxygen to the atmosphere, earning it the reputation of "the lungs of the earth". Due to its indiscriminate logging, its area is shrinking, which has attracted strong attention from the international community.

Explanation: The irrational development of the Amazon rainforest has caused environmental problems such as soil erosion, increased sand content in rivers, the loss of precious wild animals, and reduced biodiversity. "A sharp increase in sandstorms and serious harm from wind and sand" and "triggering global population mobility and a sharp increase in the local population" are not environmental problems caused by the irrational development of the Amazon rainforest