Primary succession | biology | Britannica
In community ecology: Types of succession. Two different types of succession, primary and secondary, have been distinguished. Primary succession occurs in essentially lifeless areas—regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. . Secondary succession occu
comparison between primary and secondary crusher
What''s the difference between cone crushers and jaw crushes. However, there are also many differences between cone crushers and jaw crushers. will give you a 1/2″ final product from the secondary cone crusher. A jaw crusher is almost always a Primary crusher and will crush rock Get Price; how a jaw crusher works and what it is used for