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 (/dÊoÊËhÃ¦náµ»sbÉËrÉ¡/; Afrikaans: [joËÉ¦ÉnÉsbÅrÏ]; also known as Jozi, Joburg, eGoli, and abbreviated as JHB) is the largest city in South Africa and is one of the 50 largest urban areas in the world. It is the provincial capital of Gauteng, which is the wealthiest province in South Africa. While Johannesburg is not one of South Africa's three capital cities, it is the seat of the Constitutional Court. The city is located in the mineral-rich Witwatersrand range of hills and is the center of large-scale gold and diamond trade. In 2011, the population of the city of Johannesburg was 4,434,827, making it the largest city in South Africa.