Have you ever noticed the green patches gracing the trunks and branches of trees? These are lichens, often misunderstood but actually a natural and harmless part of the ecosystem. Lichens are not parasites; rather, they are a symbiotic organism formed from the fusion of fungi with green algae or cyanobacteria. This partnership allows lichens to thrive on tree bark, gathering water and minerals from the air, while the algae or bacteria benefit from photosynthesis to produce the nutrients they need. Far from being a threat to trees, lichens are a sign of a healthy, balanced environment, helping trees by improving moisture retention and contributing to the overall ecological harmony. So, next time you spot a lichen-covered tree, take a moment to appreciate the intricate and beneficial relationship that it represents.
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