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.
South Africa is the ninth largest country in Africa. Located in the far south of the African continent, South Africa has an area of 1,221,037 square kilometers. The capital of South Africa is in three cities: Bloemfontein, Cape Town, and Pretoria, and the population of the country is about 47.5 million.had is in fifth place for largest African countries by area, with a total area of about 1,284,000 square kilometers. Chad is centrally located in Africa, and its capital is N'Djamena. The population of Chad is about 10.1 million.