Primary succession is one of two types of biological and ecological succession of plant life

-bare rock exposed by geologic activity

Climax community is a ecological community which populates plants and animals, remains stable and balance each other and their environment

-the example of climax community is barren rocky and then eroded over to forest, plants,and animals.

Secondary succession is one of two types of ecological succession of plant life.

-begins on soil from which previous community has been removed