Shortness of breath is by far the most common of emphysema symptoms. Most people with emphysema first notice something's wrong when they become winded during a previously routine activity. This might be climbing stairs or mowing the lawn. The shortness of breath in emphysema results from structural changes in the lungs.
The population in Lagos jumped significantly in a short period of time. In 2011, it was estimated to only have 11.2 million people. Prior to then, Cairo was the most populous city in Africa. Lagos is thought to be responsible for one-fourth of Nigeria's gross domestic product. An oil boom and a growing economy are thought to contribute to the fast population growth.
With over 89 million inhabitants, Egypt is the most populous country in North Africa and the Arab World, the third-most populous in Africa (after Nigeria and Ethiopia), and the fifteenth-most populous in the world.gypt is the most populated country in the Middle East, and the third most populous on the African continent, with about 88 million inhabitants as of 2015. Its population grew rapidly from 1970 to 2010 due to medical advances and increases in agricultural productivity enabled by the Green Revolution.