Straw and mud or clay, or otherwise called adobe (uh-dough-bee)
The answer to this question is the second item in the choices which is "where older buildings were built on a thick layer of sediment". We know that seismic vibration is the sound or movement generated from the ground. This happening is unwanted and cannot be controlled. Once this occurs in higher magnitude it would cause great damage to our structure were buildings made of rock collapse.
Scientists can't be sure about the early atmosphere and can only draw evidence from other sources. For example, volcanoes release high quantities of carbon dioxide. Iron-based compounds are present in very old rocks that could only have formed if there was little or no oxygen at the time.
I believe the answer is:
- A Chilean reporter shares live footage of an earthquake on the Web.
This is a perfect example of the power of the internet, where we have a country that is very far away and something happens in there and by using the internet you can visually see what is happening there in the exact same moment even though you may be on the total opposite side of the world.