Why are floods in urban areas particularly dangerous

"water seeps into rock cracks and dissolved minerals there. the solution travels through cracks in the. eventually concentrating into large crystals." which process is that

This map shows the member states of the european union (eu). based on this map, what is the most likely reason the eu was formed? a) to increase trade between european nations b) to protect themselves from foreign enemies c) to begin the process of forming one large nation d) to isolate europe from the rest of the international community j

Triangle xyz is translated 4 units up and 3 units left to yield triangle x'y'z' what is the distance between any two corresponding points on triangle xyz and trianglex'y'z' ?