Starting from a bare rock or a site of volcanic eruption, trace the organisms that participate in the process of succession
Simple organisms appear first of all on such an exposed site as lichens. Lichens make conditions suitable for mosses (bryophytes). Gradually a variety of complex organisms join the community Finally, large plants, trees, etc. appeared. It can be illustrated that lichens are pioneers, followed by mosses, annual grasses, perennial herbs, shrubs, and finally trees along with their characteristic animal populations.
