Mark is writing an essay on primary concepts of perspective drawing. Help him complete the following sentences.

Romeo and juliet, what is the main idea?

Sarah and juan were running in the school track meet. the muscles in their arms and legs them run fast. other muscles that you cannot see were also at work. the most important muscles for this track meet were the muscles in their a) arms. b) eye. c) feet. d) heart.

Sound waves can travel only in the aira. trueb.false