AP BIOLOGY

Detailed explanation-1: -Secondary succession occurs when the severity of disturbance is insufficient to remove all the existing vegetation and soil from a site. Many different kinds of disturbances, such as fire, flooding, windstorms, and human activities (e.g., logging of forests) can initiate secondary succession.

Detailed explanation-2: -Secondary succession begins after a disturbance, like a fire. Crucially, some soil and nutrients remain present-fire, in fact, may help recycle those nutrients.

Detailed explanation-3: -In secondary succession, a previously occupied area is re-colonized following a disturbance that kills much or all of its community. A classic example of secondary succession occurs in oak and hickory forests cleared by wildfire. Wildfires will burn most vegetation and kill animals unable to flee the area.

Detailed explanation-4: -Secondary succession is the re-colonization process of a full-fledged ecological community from the remnants of the soil after an ecological disturbance. Secondary succession is a type of ecological succession and it follows after a primary succession. This succession process takes less time than primary succession.