Primary Succession on a Rock. 1  Obviously, on bare rock, no develop soil exists. The niche of the lichen (mutualistic relationship between algae and fungi) is to live on the rock where it releases carbon dioxide, which when mixed in rainwater, makes a weak acid (carbonic acid).
To dream of chaos, is a sign that you will go into a difficult period filled with change, uncertainty and unknowns. [Other similar dream interpretations]
Dreams can mean many things, they can symbolize things, and most likely you have been hearing news about the world ending which could give you a phobia then cause your dream. Dreams are nearly always about the dreamer, and catastrophic events seen in dreams symbolize upheaval in the dreamer's life.