Example 1: a forest of trees and underground plants inhabited by animals and soil with bacteria and fungi

Example 2: the benthic community is made up of organisms that live in and on the bottom of the ocean floor

A mutualistic combination of fungus and algae begin to grow on rock. Because lichens along mosses, are among the first organisms to appear called pioneer species pioneer species help create soil secreting acids that can help to break rocks as pioneer organisms die, the decaying material along with bits of sediment from rock make up soil development. 

As organisms such as small weedy plants, fungi, insects, die, additional soil is created. seeds , transported by animals, water, or wind begin to grow in the newly formed soil. Eventually enough soil is presented so that shrubs and trees can grow. 

Examples of where primary succession may take place include the formation of new islands, on new volcanic rock, and on land formed from glacial retreats. In primary succession, the initial conditions are often times very harsh, with little or no soil present.