At least five of these have occurred in Earth's history,one of which occurred 65 million years ago and wiped out the dinosaurs.
A) mass extinction event
B) punctuated equilibrium
C) millennia-long drought
D) phylogenetic extinction

Question

Quizplus · Accepted Answer

Mass extinction events are the only option listed that have occurred at least five times in Earth's history and can wipe out a significant percentage of species on the planet. The event 65 million years ago is believed to have been caused by a large asteroid impact. Punctuated equilibrium describes a pattern of evolution, not extinction. Millennia-long drought may have resulted in local extinctions, but not on a global scale. Phylogenetic extinction refers to the loss of certain branches on the evolutionary tree, but not necessarily entire species or groups.

At Least Five of These Have Occurred in Earth's History,one