Freshwater lakes are bodies of water that contain low concentrations of salt, making them distinct from oceans and seas. They are typically formed through various geological processes, such as glacial activity, volcanic activity, or the natural damming of rivers. Freshwater lakes can vary in size, depth, and ecological characteristics, supporting diverse plant and animal life. These lakes play a crucial role in the environment by providing habitats for wildlife, serving as sources of drinking water, and supporting recreational activities. Notable examples of freshwater lakes include Lake Superior, Lake Baikal, and Lake Victoria, each contributing to local ecosystems and economies.