A lake is a large body of water that is surrounded by land. It is a type of freshwater ecosystem that can vary in size and depth. Lakes can be formed in different ways, including through glacial activity, volcanic activity, or tectonic processes. They are an important part of the Earth's water cycle and provide habitats for a wide variety of plants and animals.
Studying lakes is important not only for understanding natural ecosystems but also for managing and conserving these valuable resources for future generations.