Question

The Gulf Stream passes from the Gulf of Mexico, northward along the coast of eastern North America, and eastward toward Ireland, the United Kingdom, and Scandinavia. Without the Gulf Stream, these regions would be colder than they are. How does the Gulf Stream keep these regions warm?

Answer 1

Answer: It brings warm water, which heats the overlying air

Explanation:

Ocean currents affect the overlying air. Warm currents warm the air, while cold currents cool the air. When currents are close to the shore, the warm or cool air influences the temperature of the shore region.

The Gulf Stream is a warm current, so it makes those regions warmer than they might otherwise be.

Answer 2

I believe it is keeping these regions warm because the water is flowing from the SOUTHERN part of these regions, like, how it starts from the bottom of the US, (aka Louisiana, Mississippi), and it gradually flows upward, but hot always overrules cold, so the cold water that it is flowing into is becoming warmer as it passes into the warm water from the gulf of Mexico.
Hope that this helps :)