① The Amazon Basin covers an area of ​​6.915 million square kilometers.

② The Amazon Plain covers an area of ​​5.6 million square kilometers (of which more than 2.2 million square kilometers are in Brazil, accounting for about 1/3 of the country's territory).

③ The Amazon Province covers an area of ​​109,665 square kilometers and is the largest province in Colombia. It borders Brazil to the east, Peru to the south, Putumayo Province to the west, and Caquetá Province and Vaupes Province to the north.

The Amazon Plain covers an area of ​​5.6 million square kilometers (of which more than 2.2 million square kilometers are in Brazil, accounting for about 1/3 of the country's territory). The plain is wide in the west and narrow in the east, with low and flat terrain. The widest part is 1,280 kilometers, most of which is below 150 meters above sea level. The central part of the plain near Manaus is only 44 meters above sea level, and the eastern part is even lower, gradually approaching sea level.

The Amazon River is 6,480 kilometers long and has a basin area of ​​7.05 million square kilometers.

The Amazon rainforest is the largest rainforest in the world, covering an area larger than Europe, covering 7 million square kilometers. It stretches from the lower slopes of the Andes Mountains to the Atlantic coast of Brazil.