"phenylalanine is an amino acid needed by the body and must be ingested through the diet. therefore, this is an example of a(n) amino acid."

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.