Question

Many of the alkaline and saline lakes in and around the complex of rift valleys known collectively as the Great Rift Valley running down eastern Africa, are notable for what?

Answer 1

The lakes are known as soda, or alkaline, lakes and typically have a pH value between 9 and 12. Many soda lakes also contain high concentrations of sodium chloride and other salts, as do many of the Great Rift lakes, making them heavily, even hyper-, saline, and extreme environments.