Fashion and identity are inseparable companions

The energy applied to cause vibration can be in the form of air pressure a stick, bow, or electricity. true or fasle

Igotta why is there only 2 semesters and 4 quarters and not 4semesters and 4 quarters? 1 quarter for each semester? ? is this a dumb question?

In the ninteenth century,why was it more nessesary for art to provide accyrate represemtations of life and objects