AP BIOLOGY

Detailed explanation-1: -During primary succession, the soil must be formed from rock. During secondary succession, the soil is already established. In the earliest stage of succession, what organisms colonized the lava rock?

Detailed explanation-2: -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-3: -What is the difference between primary succession and secondary succession? Primary succession occurs in an area with no life and no soil but secondary succession happens in an area where an existing community was disrupted.

Detailed explanation-4: -Primary succession is ecological succession that begins in essentially lifeless areas, such as regions in which there is no soil or where the soil is incapable of sustaining life (because of recent lava flows, newly formed sand dunes, or rocks left from a retreating glacier).