Download Living Fossils by Rebecca E. Hirsch (.PDF)
Living Fossils: Survivors from Earth’s Distant Past by Rebecca E. Hirsch Requirements: .PDF reader, 5 MBOverview: In the history of life on this planet, 99.9 percent of all species have gone extinct. But a few have survived almost unchanged. Author Rebecca E. Hirsch introduces readers to six living fossils, including the chambered nautilus, the horseshoe […]