If they live happy and healthy they build more and effieciently because of their bodies being capable to do more then when not being healthy
Positive becaus Mexico city is right
A Landslide is a type of mass movement that occurs when a thin block of soil, rock, and debris separates from the underlying bedrock.
Actually, this thin block of soil and rocks were held by Tree's roots so it do not separated from the bedrock. Now days, more and more trees were cutted down for modern development, and more landslides happen because of this.
There is a grand total of 196 countries in the world. Hope this helped.