Respuesta :
volcanic eruption. a solidified lava flow will devoid plants of necessary soils in which to grow.
Answer: The natural calamities like volcanic eruption,can favor primary succession.
Explanation:
The natural calamities like volcanic eruption make the place a barren land where there is no life, as there is no soil.
This kind of a place will be supported with life only when pioneer species will start growing on it.
The first species that will appear on barren land will be moss and lichen.