A major obstacle to developing a good human relations skill is that : few person have a common interest a communication between two people will be a lot easier if they have common interest because a person tend to like other person that are similar to him (whether it's race, background , or common interest).
Try B if it is not it I am sorry I checked on Google
The lower layer is thought to be hard and rough
It is known a longtiutal wave, aslo a p-wave
Answer:
From their original location, they are 5m east and 10m North.
