Question

The Ob, Yenisey and Lena rivers often form swamps and marshes. Give reasons.

Answer 1

Answer:

The mouths of the Ob, Lena and Yenisey remain frozen during the severe winter months. In spring, when the snow on the Central Mountains melts, their flow increases. But as their mouths are still blocked by the Arctic ice, the rivers overflow their banks, forming marches and vast swamps.