Pioneers in Brazil are cutting down trees to reclaim wasteland.

Brazilians moved from southeast to northwest Amazon plain, built trans-Amazon highway and cut down tropical rain forest.

This is determined by the national economic development. The urbanization in Brazil is abnormal, with industry and agriculture concentrated in the southeast, and agriculture mainly processes tropical primary products. The development of Amazon plain can temporarily obtain a large amount of cultivated land, which is convenient for planting, and the cut trees can also be sold to developed countries to earn profits.

However, the climatic benefits of tropical rainforests far exceed the economic benefits, which have a significant beneficial impact on global warming. They absorb carbon dioxide and are called "lungs of the earth" and "medical treasures". Developed countries call for the protection of rainforests, while buying a large number of trees from Brazil. At present, Brazil can only make a profit by selling rainforests.