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

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

organisms compete for resources, and those that are best fit to survive establish themselves as dominant species.
algae, grasses, and small plants grow on newly exposed rock over a long period of time.
predation causes a population of prey to migrate to a new location in order to survive.

Subduction zones form when an oceanic plate collides with another oceanic plate or continental plate. the continental crust is lighter and less dense than oceanic crust. continental crust's density is approximately 2.7 grams per cubic centimeter. oceanic crust is thinner and the average density is about 3.3 cubic centimeters. when the two crustal plates converge the oceanic plate always bends and subducts beneath a continental plate. once the oceanic crust subjects, the rocks are subjected to changes in heat and pressure. because of this, we would expect to find rocks in the area of a subduction. a) clastic b) igneous c) metamorphic d) sedimentary