This tactile feedback is related to a difference in tis-sue density as one goes from the parenchyma to the vessels or from the parenchyma to the collecting sys-tem, and also to the selectivity of the CUSA to spare tissue of high collagen content.
1 In the least developed countries, the overall illiteracy rate is 49 percent. 2  52 percent of all non-literates live in India and China. 3  Africa as a continent has a literacy rate of less than 60 percent. 4  In Sub-Saharan Africa since 1980, primary school enrollment has declined, going from 58 percent to 50 percent.
South Africa is a nation of diversity, with nearly 52-million people and a wide variety of cultures, languages and religious beliefs. Africans are in the majority, making up 79.2% of the population; coloured and white people each make up 8.9% of the total; and the Indian/Asian population 2.5%.Other population group makes up 0.5% of the total. Africans are in the majority at just over 41-million, making up 79.2% of the total population.ccording to the Census 2011 data from Statistics South Africa, in 2011 the country's population was 51 770 560, of which 26 581 769 (51.3%) were female and 25 188 791 (48.7%) were male.