Which of the following is an example of the changes that take place in an ecosystem during secondary succession?

AAlgae, grasses, and small plants grow on newly exposed rock over a long period of time.

BOrganisms compete for resources, and those that are best fit to survive establish themselves as dominant species.

CPredation causes a population of prey to migrate to a new location in order to survive.

DShrubs and trees regrow quickly in an area that has been burned during a forest fire.