The focus is where an earthquake originates, usually deep underground true or false​

The answer would be c

You should never redesign your experiment. try and see what in your experiment you made a mistake on or try and test your experimemt with somebody else. see if they get the right results.

Be prepared.experiment breaking point of rubber bands measured in certain amount of temperature communication

that's all i luck!

Sorry  i don't understand can you rephrase that