Answer: The ice caps are already in water.
Explanation:
The ice packs in North Pole and the ice sheet in Antarctica are already in water. When they melt therefore, they are simply being converted from one state to another but the quantity is the same.
In other words, the volume that the ice occupied in the water becomes the volume of liquid added to the water so there is no net change in volume added leading to sea levels staying the same.
I don't understand this question
Topographic maps use contour lines to show elevation.
Topographic maps, often called "topo maps," feature contour lines to portray the shape and elevation of the land.
Contour lines (lines of equal elevation) that are close together indicate steep terrain, while lines that are far apart indicate flat terrain.
Such maps also usually portray both natural and artificial features. They show and name natural land formations such as mountains, valleys, plains, lakes, rivers and vegetation. They also identify particular man made features such as roads, boundaries, transmission lines and major buildings.
Lava cools more rapidly above ground than it does underground because it's much colder above ground than it is underground, speeding up the process.
Think about it this way: If you put a cup of water in two freezers, and Freezer A had a lower temperature than Freezer B, the water in Freezer A would freeze quicker because it is in a colder environment. Hope this helps!