What do lichens eat?

Lichens are a simple organism, the association is represented by algae and fungi, which are difficult to interact with each other and are in symbiosis. There are over 20 thousand species of lichens.

Lichens, like plants, feed on trace elements and water. Water supports the life of the lichen. They serve as a natural indicator of air purification and are very sensitive to pollution. They do not have roots, leaves and stems, lichens grow on rocks, stone soil and gradually destroying, and turns them into soil.