Twenty percent of all fresh surface water is in Lake Baikal in Asia.
Explanation:
Studies on Lake Baikal, located <em>south of Russian Siberia,</em> showed that if the entire world population only drank water from this lake, they could live 40 years without any problem of scarcity. This is<u> the oldest </u>lake that is known and considered drinkable thanks to the cleaning carried out by the microorganisms that inhabit it. Its waters are a paradise for <em>fauna and flora </em>and are also <u>used for different medical purposes.</u>
Lut Desert is known as the is a large salt desert in the province of Kerman, Iran. It is one of the hottest places in the world, the temperature is about 70°C.
Kavir Desert is also known as the Great Salt Desert located in the middle of the Iranian plateau. The climate is arid and the thermal amplitude can reach up to 70°C.