Which part(s) of a telephone involves the conversion of sound waves to electrical signals?

a.) both the speaker and the microphone

b.) the microphone

c.) neither the speaker nor the microphone

d.) the speaker

In a cladogram' when does a group of organisms branch off

How can a geological time scale best be reconstructed? a) comparing vestigial structures in living species b) comparing homologous structures in living species c) examining homologous structures in fossil remains d) examining the written records of scientists from past cultures

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.