#crustmos A lichen is the best example of a symbiosis, and it is that nature is wise, the lichen is formed in part alga and part fungus, both united to survive, the alga usually of the simplest, needs the small filaments of the fungus to establish and not perish, while the fungus, lacking chlorophyll, cannot carry out the photosynthesis to feed, so it needs algae, I think we should learn from nature and be more like lichen

Necessary symbiosis

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