Question

The ob yenisey and lena rivers often form swarms and marshes

Answer 1

Answer:

Answer: The three great Siberian rivers, Ob River, Yenisei River and Lena River all flow into the Arctic Ocean, the problem was to find parts or branches of these rivers that flow approximately east-west and find short portages between them. Thus they form swamps and marshes.

Answer 2

Answer:

The three great Siberian rivers, Ob River, Yenisei River and Lena River all flow into the Arctic Ocean, the problem was to find parts or branches of these rivers that flow approximately east-west and find short portages between them. Thus they form swamps and marshes.

Explanation:

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