Chemical weathering involves the change in the composition of rocks, often leading to a 'break down' in its form. This is done through a combination of water and various chemicals to create an acid which directly breaks down the material.
Zimbabwe is often reported to have the highest adult literacy rate on the continent. A recent news article claimed that 90% of the population is literate. The data does not back up the claims. Researched by Kate Wilkinson.
Today the region continues to be the epicentre of the HIV/AIDS epidemic, with 48 per cent of the worldâs new HIV infections among adults, 55 per cent among children, and 48 per cent of AIDS-related deaths [1]. The Southern Africa sub-region, in particular, experiences the most severe HIV epidemics in the world.Nine countries-Botswana, Lesotho, Malawi, Mozambique, Namibia, South Africa, Swaziland, Zambia and Zimbabwe-have adult HIV prevalence rates of over 10 per cent.oday the region continues to be the epicentre of the HIV/AIDS epidemic, with 48 per cent of the worldâs new HIV infections among adults, 55 per cent among children, and 48 per cent of AIDS-related deaths [1]. The Southern Africa sub-region, in particular, experiences the most severe HIV epidemics in the world.