A wall stands using gravity. It is constantly being pulled down. Many also place them in ways that they dig into the ground, and almost make a socket just for the wall to be placed, using the land that is there. More and more walls are placed and eventually, they make flooring and a roof.
Hope that helped!
I believe it is C, dulled sensory perception. decreased anxiety is another effect, but it's more long term.
Until recently, Sudan and South Sudan were a unified country. Africa is mainly known for its diversity of wildlife, but there is more to be known about this continent than its wildlife. There are certain political issues in some parts of the continent that require the world’s attention. Sudan and South Sudan are such parts of the continent which one should understand.
When the plates are moving, they go up against each other and go along each other and when a 'non-matched' piece comes, they hit causing an earthquake.<span />