In: Biology
Ecological succession is natural development of biotic communities in a seriers
Primary- the succession which are bare from the begning,soil is absent from the begning and no human present . In primary sucession it is the process of small organism and erosion breakingbdown of rocks into soil, for example; newly exposed rocks, Hydroshpere and lithosphere.
Where in secondry succession this comes after primary and soil is already formed. Here is thick layer of soil provide life to plant and further to animals It take lessar time than primary