Geologic Time
Early Attempts at Earth Dating
Modern Techniques for Determining the Age of Earth
Arranging Events in Order
Geologic Time and the Fossil Record
Early Ideas About Fossils
Types of Fossils
Using Fossils to Determine the Order of Geologic Events A Closer Look: What Is Carbon-14 Dating?
The Geologic Time Scale
Paleontology, Archaeology, and Human Evolution
The Australopiths A Closer Look: Neanderthals Were Probably a Different Species
The Genus Homo
The Origin of Homo sapiens
The Classification of Organisms
Taxonomy
Phylogeny
A Brief Survey of Biodiversity
Domains Eubacteria and Archaea
Domain Eucarya A Closer Look: The World's Oldest and Largest Living Organisms
Acellular Infectious Particles
Viruses
Viroids: Infectious RNA
Prions: Infectious Proteins
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