The animation about the beavers damn caused a secondarysuccession to occur. When

The animation about the beavers damn caused a secondarysuccession to occur. When the beavers built the damn they cause adisturbance resulting in the environment changing. This would notbe a primary succession it did not happen from the beginning wherethere was no life originally; there was an existing ecosystem thathad living organisms and species in which a change took place.