Answer:
A primary disturbance can be described as a disturbance which completely wipes out the previous ecosystem. It also destroys the soil present in that area. For example, the eruption of lava.
Such areas tend to bring life back into them after many years. Firstly, only small plants begin to accumulate this area. These plants might be adapted to live in conditions where the resources are scarce. Such plants might have the ability to self pollinate as there is no diversity present. Also, as plants can make their own food by photosynthesis so they will accumulate the land before consumers arrive.
