What is the difference between the type of smog experiences by cities in the eastern united states and that found in southern california?

all of my points pls !

Of seawater increases with decrease in the temperature. therefore, the cold water sinks to the deeper layers at the bottom

45 points how are people today being protected from tsunamis? earthquake data is analyzed to detemrine if a tsunami is likely, and if so, warnings are sent out. areas in tsunami risk zones are no longer heavily populated. radar is used to measure wave heights regularly. meteorologists study the winds to determine if wave heights will be large.

Pulmonary arteries carry highly oxygenated blood. true or false?