1) Northwest coast of North America is ice free.
2) The warm Alaskan Current flows near the northwest coast.
A
Both 1 and 2 are true and 1 is the reason for occurrence of 2.
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B
Both 1 and 2 are true and 2 is the reason for occurrence of 1.
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C
1 is true and 2 is false.
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D
1 is false and 2 is true.
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Solution
The correct option is B Both 1 and 2 are true and 2 is the reason for occurrence of 1. Ocean currents influence the climate of North America. The warm Alaskan current that flows in the west keeps the northwest coast of North America ice free.