List four factors that affect the amount of destruction that ...

[khang]

List four factors that affect the amount of destruction that seismic vibrations cause to human-made structures.
 
  What will be an ideal response?

Question 2

Carbon dioxide currently has a concentration of ________ in the homosphere.
 
  A) 580 ppm B) 270 ppm C) 400 ppm D) 315 ppm

[nanny]

Answer to Question 1

a. The intensity of the vibrations
b. The duration of the vibrations
c. The nature of the material on which structures rest
d. The nature of building materials and construction practices of the region

Answer to Question 2

C