1 Answers

Option 4 : A-2, B-3, C-1

The correct answer is option 4, i.e, A-2, B-3, C-1.

  • Mackenzie River:
    • Its basin is the largest in Canada.
    • Drained an area of 697000 square miles which is almost as large as Mexico.
    • It has a strong flow.
    • Its lake covered triangular delta measures more than 120 miles from north to south.
    • And is about 50 miles wide along the Arctic Shore.
    • Source- Head of Finlay River.
    • Outflow- Beaufort Sea.
  • Yukon River:
    • Flows through the central Yukon territory of northwestern Canada and the central region of the US states of Alaska.
    • It measures 1980 miles from the headwaters of the McNeil River.
    • The main east and north bank tributaries are the- Teslin, Big Salmon, Pelly, Stewart, Klondike, Porcupine and Koyukuk.
    • And the west and south bank tributaries are-Takhini, White and Tanana.
    • Source- Junction of Lewes and Pelly Rivers.
    • Outflow- Bering Sea.
  • Nelson River:
    • Its 400 mile course is the ultimate outlet for a basin of 444000 square miles.
    • Together with Bow and North and South Saskatchewan rivers.
    • And it forms to navigate 1600 mile waterway extending as far west as Canadian Rockies.
    • Source- Head of Bow Rier.
    • Outflow- Hudson Bay.
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