Answer:
article 1 section 2 of the Constitution says that each state shall have at least one US representative while the total size of a state delegation to the house depends on its population the number of representatives also cannot be greater than one for every 30,000 people
They have less-runny lava, meaning that it doesn't travel as far before cooling, meaning that the layers build up more steeply, but don't go out as far. You also get layers of ash on the composite volcano to help build it up too