TF 1998 Geologic Time 1 › cgs › Documents › Teacher... · 2018-09-05 · GEOLOGIC TIME The...
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TF 1998 Geologic Time 1 › cgs › Documents › Teacher... · 2018-09-05 · GEOLOGIC TIME The earth is 4.5 billion years old! (give or take a million years) Chromolithoghraph of