Question

what is lake
how are lakes formed

Answer 1

lakes are large water bodies of stangent water.
it is of two types
1) Natural lake
it is mostly formed by melted glaciers,wind and action of rivers. eg a meandering river across a flood lake formed or an oxbow lake
2) Artificial lake
it is formed by human beings after dmaming of rivers eg guru Gobind Sagar in Dhaka Nangal dam...
hope you are satisfied

Answer 2

When the glaciers melted, water filled those depressions, forming lakes. Glaciers also carved deep valleys and deposited large quantities of earth, pebbles, and boulders as they melted. These materials sometimes formed dams that trapped water andcreated more lakes