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The Lower Amazon begins where the darkly colored waters of the Rio Negro meets the sandy-colored Rio Solimões (the upper Amazon), and for over 6 km (3.7 mi) these waters run side by side without mixing. At Óbidos, a bluff 17 m (56 ft) above the river is backed by low hills.
The Amazon River is the largest river in the world in terms of its flow rate. In addition, it is the second longest river, measuring 6,575 km (4,086 mi) [3] from its source to the mouth of the Atlantic Ocean [4] after the Nile River which is considered to be the longest river in the world (see Source of the Nile River), although there is some dispute.
The Amazon was a favorable environment for the development of these prehistoric societies, since they flourished on the banks of large rivers, which were numerous in the region. According to archaeological and ethno-historical data, the Amazon and Orinoco rivers were the main places where these organizations settled in South America and Central ...
Mismi is a 5,597-metre (18,363 ft) mountain peak of volcanic origin in the Chila mountain range in the Andes of Peru.A glacial stream on the Mismi was identified as the most distant source of the Amazon River in 1996; [1] this finding was confirmed in 2001 [2] and again in 2007. [3]
Departure of the Amazons, by Claude Deruet, 1620, Metropolitan Museum of Art, New York. The origin of the word is uncertain. [10] It may be derived from an Iranian ethnonym *ha-mazan-'warriors', a word attested indirectly through a derivation, a denominal verb in Hesychius of Alexandria's gloss "ἁμαζακάραν· πολεμεῖν.
The Amazon rainforest could be reaching an irreversible tipping point beyond which it will decline until “we’re just left with scrub”, conservationists have warned.
The Amazon rainforest, [a] also called Amazon jungle or Amazonia, is a moist broadleaf tropical rainforest in the Amazon biome that covers most of the Amazon basin of South America. This basin encompasses 7,000,000 km 2 (2,700,000 sq mi), [ 2 ] of which 6,000,000 km 2 (2,300,000 sq mi) are covered by the rainforest . [ 3 ]
It has historically been considered the longest river in the world, [3] [4] though this has been contested by research suggesting that the Amazon River is slightly longer. [ 5 ] [ 6 ] Of the world's major rivers, the Nile has one of the lowest average annual flow rates. [ 7 ]