Question

the graph below shows data about three tree species after a glacial retreat. based on the data shown in the graph, which of the following events occurred after the glacial retreat? a primary succession b flooding c sea level rise

Explanation:

Glacial retreat leaves bare rock, which is the starting point for primary succession. Primary succession is the process of ecological change where organisms colonize a previously uninhabited area (like after a glacial retreat). Flooding would have a different impact on species (more immediate and perhaps sub - merging areas). Sea level rise would affect coastal areas in a way not indicated by the species - time graph. The graph shows the establishment and change of tree species over time in an area that was likely bare (after glacial retreat), which is characteristic of primary succession.

Answer:

A. Primary succession