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 African city with the largest population is Lagos, Nigeria. In 2014, the city was estimated to have a population of 21 million people.
The most densely populated country of Africa is -----  Rwanda       Nigeria, has the highest population (146.2 million) in Africa, but  is not necessarily th â¦ e one with the highest population density (per  area).