EXTINCTION term papers and essays pg.3

A discussion of the possible causes of mass extinctions such as that of the dinosaurs.

An overview of the Permian period in history, when many of earth's species died out.

A discussion of the increased numbers of endangered species in the world.

Examines theories for their extinction including genetics, climatic change, sea fluctuations and a meteor strike.

A look at the threat of extinction facing the poison arrow frog.