Liquen: especie indicadora

Lichens are slow-growing organisms formed by an alliance between algae and fungi. They are often the first to colonize new areas, thriving in harsh environments by drawing nutrients from the atmosphere. Due to their sensitivity to air pollution, lichens serve as natural indicators of environmental conditions. They demonstrate the power of collaboration in challenging habitats.

Explain the collaboration between algae and fungi in lichens.

What role do lichens play in reflecting environmental conditions?