Respuesta :
Answer:
Primary succession
Explanation:
Primary succession is mostly cause by volcanic eruption
The first ecosystem to occur in the Mount St. Helens after eruption is the primary succession.
What is a primary succession?
The term primary succession refers to the organisms that first occur in an ecosystem after a major event such as the volcanic eruption has taken place.
In this case, the first ecosystem to occur in the Mount St. Helens after eruption is the primary succession.
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