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The top documents tagged [mesozoic middle life]
Geologic Time Earth and Space Science. Major Questions? How old is the Earth? How did it form? Was it created? Did it evolve? What processes were involved?
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Warm Up 1/10/08 1. 1. Fossils are the ____. a. oldest layers of rock in a region b. objects that people of long ago left behind as artifacts c. living
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Geologic Time Scale Precambrian — Minimal fossil record Era, Period, Epoch Based on major changes — extinctions, mountain building events
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Geologic Time and Evolution. Earth Has a History Geologic materials record enormous changes. Earth is a complex, evolving system. – Physical and biological
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Warm Up 1) 1) Atoms with the same atomic number but different mass numbers are called ____. a.ionsc. neutrons b.protonsd. isotopes 2) 2) Radiocarbon dating
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Earth Systems and Resources
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