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.
Unfortunately South Africa is the country which has the Highest AIDS patient rate in the World which has a largest population infected with HIV. According to an estimate it has 56,00,000 people which are infected with HIV out of 51,770,560.List of Top 5 Countries with most HIV/AIDS. 1  South Africa.2  Nigeria.3  India.nfortunately South Africa is the country which has the Highest AIDS patient rate in the World which has a largest population infected with HIV. According to an estimate it has 56,00,000 people which are infected with HIV out of 51,770,560. List of Top 5 Countries with most HIV/AIDS. 1  South Africa. 2  Nigeria. 3  India.