Why might the cartoonist have represented the US as a life raft?

Which would be most likely to contain a good aquifer—igneous rock, sedimentary rock, or metamorphic rock? explain what qualities of this rock type make it a good aquifer. 500 word minimum response

When a rock is mechanically weathered, the surface area of the rock is increased, which allows a greater amount of chemical weathering to occur. the surface area of the rock is increased, which hinders chemical weathering. the volume of the rock is decreased, which hinders chemical weathering. the volume of the rock is increased, which allows a greater amount of chemical weathering to occur. the surface area of the rock is decreased, which allows a greater amount of chemical weathering to occur

What is meant by the last line of the text? how did the maginot line serve as an example of this saying?