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.
1 Africa as a continent has a literacy rate of less than 60 percent. 2  In Sub-Saharan Africa since 1980, primary school enrollment has declined, going from 58 percent to 50 percent. 3  In all developing countries, the percentage of children aged 6-11 not attending school is 15 percent.