Question

give reason :The lower courses and mouth of rivers Ob,Yenisei and Lena remain frozen throughout the year. please answer my question please ​

Answer 1

Answer:The Ob River (Russian: Обь, IPA: [opʲ]), also Ob', is a major river in western Siberia, Russia, and is the world's seventh-longest river. It forms at the confluence of the Biya and Katun Rivers which have their origins in the Altay Mountains. It is the westernmost of the three great Siberian rivers that flow into the Arctic Ocean (the other two being the Yenisei River and the Lena River).