The island of Surtsey was formed by volcanic eruption and first appeared in 1963. Figure 1 contains descriptions of changes in the population and diversity of species that occurred on this island over time.
Figure 1
Descriptions of Changes
I Sea lyme grass, sea rockets, oyster plants, and other shrubs appear.
II The lava and sands have few nutrients and are barren.
III Dwarf willow trees colonize the island.
IV Mosses, lichens, and plants that are adapted to dispersal by the wind and growth in sand begin to appear.
Using Figure 1, which of the sequences below lists the descriptions of changes in the correct order of ecological succession?