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.
The overall youth literacy rate is 99.34%. Youth literacy rate definition covers the population between the ages of 15 to 24 years. Source: The estimation data for section Chile population literacy is based on the latest data published by UNESCO Institute for Statistics (retrieved March 13, 2016) . Chile historical population (1951 - 2018)