The difference between tsunami watches and tsunami warnings is that ____
a. ?tsunami warnings are issued when an earthquake occurs, and watches are issued when there is less than one hour before the arrival of the tsunami
b. ?tsunami watches are issued when an earthquake occurs, and warnings are issued when there is less than one hour before the arrival of the tsunami
c. ?warnings are issued when a major earthquake happens, and watches are issued when tsunami waves are detected
d. watches are issued when a major earthquake happens, and warnings are issued when tsunami waves are detected?
e. ?tsunami watches are issued when the effects will not affect populations, and warnings indicate hazards to life and property
ANSWER: d
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