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12 questions from this quiz
Preserved remains from millions of years ago
No oxygen/moisture prevents microbes
Minerals replace decaying organic parts
Footprints
Map relationships between species
Most were soft-bodied and decayed fully
Erosion, volcanic activity, tectonic moves
About 6 million years ago
Hominids
Ardipithecus ramidus
Australopithecus afarensis
Homo erectus
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