Trace down the pathway of glucagon from its source to its target site 1 inferior vena cava
2 heart, lungs, heart
3 pancreatic vein
4 aorta
5 target site
a 1,2,3,4,5
b 2,1,3,4,5
c 3,2,1,4,5
d 3,1,2,4,5

According the inverse square law, doubling the distance from the source of the sound, a speaker, for example, will drop the sound 6 db each time. if you were standing in the back of an auditorium, 32 feet away from a speaker not using any amplification, would you be able to hear a speaker clearly? why or why not?