Question

what are specific stages of succession called?
a layer
a level
a sere

Explanation:

In ecological succession, the specific stages are called a sere. A layer refers to a horizontal stratum in an ecosystem (e.g., forest layers like canopy, understory). A level is a more general term not specific to succession stages. Sere is the correct term for the sequential stages in succession.

Answer:

C. a sere