Answer:
Ecological succession can defined as the long term progression of the biological community that takes place in an area.
It includes three steps:
Primary succession: Primary succession can be defined as the area which was devoid of life and now organism colonize there.The first organism to grow there are mosses, algae, et cetera.
Secondary Succession: Secondary succession can be defined as the area where established community is replaced by a different types of animals and plants.
Intermediate stage: The stage which is continuously developing by the never ending growth of plants and animals there.
Climax community: The final and stable community of plants and animal restricted in that area only.