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.
Middle-income countries have the highest rate with 20 deaths per 100,000 inhabitants, 80% of all road fatalities by only 52% of all vehicles. While the death rate in Africa is the highest (24.1 per 100,000 inhabitants), the lowest rate is to be found in Europe (10.3).