What is one way that earth’s ocean currents regulate global climate

Oceans currents are significant in thermal regulation. The ocean waters at the equator are warmer than those at the poles. This is due to the fact that the tropics receive direct sunlight throughout the year than the poles. The less dense warm currents move towards the poles on the surface waters while the cold denser waters from the poles move towards the equator on the ocean floor. This is expedited by the Coriolis effect of the earth’s rotation. These ocean currents transfer heat and distribute it hence regulating the globe’s climate.  

b. 20: 5

explanation:

20% of the worlds population lives in southwest asia, and less than 5% of the world's

land area.