DENDROLOGY

Detailed explanation-1: -In primary succession, newly exposed or newly formed rock is colonized by living things for the first time. In secondary succession, an area that was previously occupied by living things is disturbed, then re-colonized following the disturbance.

Detailed explanation-2: -Primary and Secondary Ecological Succession Facts A newly quarried rock face or dunes is an example of primary succession. Secondary succession occurs in an area that is previously colonized but disturbed or damaged habitat. For example, after falling a tree in the woods, land clearance, or a fire.