71% of earths surface is covered by water
Answer:
After when it erupts the lava runs similarly to water, to the lowest point, then it hardens to rock.
The tropics are between 23.5 south and 23.5 north.
The answer is seafloor spreading and subduction.
Hope this ain't too late (this is the PLATO answer)
Based on what he is trying to find political boundries or natural landscapes