Do this question what would happen to the world's seas of all the ice of greenland and antarctica melted

Water levels would rise and flood coastal cities and islands.

Explanation:

Billions of gallons of water are held in ice caps, if it all melted, then water level would rise significantly.

they are both the same distance away from the equator and from the poles. both circles are at 66 1/2 degrees. also they both form imaginary line borders of polar regions.