Describe the Yukon River.

1) A river in the north-west of Canada and the USA (Alaska) flows into the Bering Sea.
2) The source is the March, the mouth is the Bering Sea, and the northwest is the direction of the current.
3) Before the confluence with Pelli flows in a deep mountain valley, forming rapids. About half of the river has a flat character.
4) It feeds on numerous tributaries, as well as on the melting snow of Alaska.
5) The floodplains have, as a rule, fertile soils and rich flood meadows, often used for garden crops. In the valleys of the river in most cases pass the main land transport arteries (railways and roads); along the river is the predominant part of cities and towns.