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.
South Korea, one of the most developed countries in Asia, has the highest suicide rate in the developed world. It has had an alarming rise in the suicide rate in the recent years with a rate of 33.8 suicides per 100,000 people.