Answer:
The text demonstrated in the given sentences is the use of examples or specific instances to support a statement or claim.
In this case, this mentions specific examples, such as comets, small asteroids, debris from the birth of the Solar System, and the Chicxulub impact (which is attributed to the extinction of dinosaurs), to illustrate the idea that Earth is regularly struck by such celestial objects. The examples provide concrete evidence to support the statement being made.