Which example describes secondary succession?
a. a volcanic eruption occurred in the ocean and created new land.
b. a road was being built in an area but had to be abandoned due to the impact on the environment. several decades later, there were a few plants growing out of the pavement.
c. due to increasing temperatures, glaciers melted exposing barren land.
d. a few months ago, there was a wildfire in a forest and only a few plants and animals survived. recently, many trees that existed before the fire have started growing again.