Preservationists must accept extinction as a natural occurrence | Principia Scientific Intl.
In the great Permian extinction, about 250 million years ago, about 95 per cent of ocean dwellers and 70 per cent of land dwellers disappeared. Many species of fish, corals, reptiles, insects and plants were eliminated. This was just one of five mass extinctions. There have also been over 20 smaller ones. Dinosaurs disappeared, as
