AP BIOLOGY

Detailed explanation-1: -Secondary succession occurs after a disturbance such as a forest fire, where there is still some organic matter to allow new plants to grow. Both types of succession take place over long periods of time and result in the communities reaching a state of equilibrium.

Detailed explanation-2: -There are two major types of ecological succession: primary succession and secondary succession.

Detailed explanation-3: -Climax. The last stage of ecological succession is the formation of a climax community. There is minimal resource competition and no further replacement of dominant plant species.

Detailed explanation-4: -Secondary succession is usually faster than primary succession because soil and nutrients are already present due to ‘normalization’ by previous pioneer species, and because roots, seeds and other biotic organisms may still be present within the substrate.