Lichen is a unique form of life resulting from the symbiosis between a fungus and an alga or cyanobacteria.
Together, they form a structure that appears as a single organism. Lichens can be found in a variety of environments, such as rocks, trees, and soil.
They have diverse appearances, ranging from small patches to branching structures. Lichens are highly resilient and can survive in extreme conditions.
In addition to their ecological importance, lichens are also used as indicators of air quality, as they are highly sensitive to pollution and can indicate the presence of harmful substances in the environment.
