Answer:
nitrogen
Explanation:
over the quarters of the earth consists of nitrogen
ANSWER: Parana-Rio de la Plata
You have to look at the arrival time between the P and S waves. it looks like they already did it for you here. the answer is 1035 km.
I drew a couple extra lines to show you in more detail.
Let's say for example our p-wave arrived at t=4min and our s wave arrived at t=6.5 min. The time difference is 2.5 min. So you can either plot 4 and 6.5 and draw a line straight across like I did (green line and dotted green) or find the spot where the distance between the two lines is t = 2.5 min. We see the epicentral distance for the green line is about 1800km.
Try the yellow line yourself. you should get t values of about 4.5 and 8.5 at an epicentral distance of 2600km.
Shang Cities
During the Shang Dynasty, there were several large settlements, including Zhengzhou and Anyang, though these are not believed to be as densely urban as Mesopotamian settlements during the same time. Anyang became the capitol around 1300 B.C. under King Pan Geng and at the time was called Yin.