What is the longest river system flowing into the Arctic Ocean, rising in Mongolia and traversing central Siberia?
Answer and explanation
Correct answer: D. Yenisei River
- Step 1: The Yenisei River system spans 5,539 kilometers (3,445 miles) from the headwaters of the Ider River in Mongolia to the Kara Sea in the Arctic Ocean.
- Step 2: It forms the traditional geographic dividing line between the Western Siberian Plain and the Central Siberian Plateau.
Answer
Yenisei River
Why not the others: 'Ob River' is further west in Siberia; 'Lena River' is further east, flowing to the Laptev Sea; 'Kolyma River' is in far northeastern Siberia.
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