It is. But there's so little sodium in your body that it doesn't make much difference. Just like magnesium, potassium, selenium, and zinc.
I think the first big picture is group communication, the second one with the person talking in front of everyone is public communication, and the last one is dyadic communication
Answer:
Simple yet quick mechanical vibrations of various elastic substances produce sound. When they are moved or struck to vibrate, the auditory nerve of the ear receives the same sort of vibrations, which are subsequently perceived by the mind.
Total distance/total time is average speed. Total distance is 480miles. Total time is 5 hrs. 480/5=90mph
