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]
What do horse dreams mean? A horse in a dream may mean many different things depending upon the context and content of the dream and the personal associations of the dreamer. A horse in a dream may represent strength, power, endurance, stamina, hard work and freedom. It may represent someone or something with any of these attributes.