During succession in an ecosystem, lichens rocks to form soil.

During succession in an ecosystem, lichens break up rocks to form soil

Lichen is an aggregate of fungus and algae. Pioneer species roots act like tools to crack up rocks. Soil begins to form as lichen with the forces of the climate and weathering help break down stones into smaller pieces.

Ecological succession is the process in which the various types of classes in an ecosystem change over period. Pioneer species comprise bacteria and lichens that can develop on bare rock and help produce soil.

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the tricuspid valve is present between right atrium and right ventricle