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.
Johannesburg, South Africa. The largest city in South Africa, Johannesburg is a vibrant city with year round cultural events and breathtaking tourist attractions. In terms of population, Johannesburg or Jo'burg is the biggest city in South Africa. It serves as the provincial capital of the Gauteng Province.Johannesburg covers a total area of 635.1sqmiles. This huge city accommodates an estimated population of 3,888,180 (2007).resently, Johannesburg houses the biggest economy of the metropolitan areas in the African continent. The Gauteng Province is the most thriving province in the country. The city is famous for its gold and diamond exports. The city is also home to a big and flourishing tourism industry.