Question

Why is the polar vortex appearing more frequently outside the Arctic ?

• A. Due to melting glaciers in Antarctica.
• B. Due to warming in both the Arctic and the tropics affecting the jet stream.
• C. Because of disruptions in marine ecosystems.
• D. Because of increased snowfall in colder regions.

Answer 1

Answer:

B. Due to warming in both the Arctic and the tropics affecting the jet stream.

• The first paragraph directly notes: "Research shows the polar vortex is appearing outside of the Arctic more frequently because of changes to the jet stream, caused by a combination of warming air and ocean temperatures in the Arctic and the tropics."