pdf Geochronology, Dating, and Precambrian Time مجانا للكاتب جون بي رافرتي
Geochronology, Dating, and Precambrian Time: The Beginning of the World As We Know It (The Geologic History of Earth)
A diverse range of organisms and rock formations have survived for many millennia, originating prior to the emergence of human life forms. These geological formations reveal much about EarthOCOs climate and the types of life forms that can endure certain environmental conditions. Using fossil records and geological evidence, this comprehensive series examines all aspects of prehistory, including the ascendancy of dinosaurs and the beginnings of humankind. Numerous photographs and illustrations invite the reader to understand the genesis of life as we know it.