DENDROLOGY

Detailed explanation-1: -Primary Succession is the series of changes that occur in an area where no soil or organisms exist. This is most likely to be caused by natural disasters such as volcanic eruptions and forest fires. When there are no organisms left, you are left with the pioneer species or the original organisms.

Detailed explanation-2: -When disturbances destroy an existing habitat, secondary succession may occur. This disturbance could be a forest fire or volcanic eruption. The plants and animals are gone, but the soil remains. Secondary succession begins on existing soil.

Detailed explanation-3: -Secondary successions are initiated by disturbances such as fire, wind damage, flooding, grazing, and disease.