What is a lake?
How many closed recesses there are on land, in which water accumulates. When the water does not evaporate, it forms a lake. That is what a lake is!
The definition of "lake"
A lake is an accumulation of water in a natural depression on land. It consists of a lake bowl or a bed filled to the brim with water. This body of water does not connect to the sea and the ocean. Knowing what a lake is, it is easier to understand its origin. And it differs significantly. There is a lake: tectonic, glacial, river, seaside. There is also a failure, mining, crater and artificial.
What is a lake, what are its features? First, unlike rivers, lakes do not have a current and are not part of the World Ocean. Secondly, the lakes have different water mineralization. The deepest and most fresh lake is Baikal. And the largest lake and, by its composition of salts, similar to oceanic water, is the Caspian. It was once a sea, as it was connected to the ocean.
There is also a division of lakes according to the position, according to the water balance, according to the chemical composition of the water and according to the nutritional value of the substances contained in the lake.
There are really a lot of features.There are lakes of different shapes, sizes, bottom relief. So, small lakes are called lagoons, and larger ones are called “seas”. They receive water not only because of the rains, but also from underground rivers. Such close "cooperation" allows the rivers not to dry up. Often lakes even give life to new rivers.