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U8.S1.B2: Geologic Time (A-F)
A. What causes
glaciation
(i.e., an ice age)?
B. How are sediments
deposited
by the movements of
glaciers
? How do glaciers
erode
and reshape the land? How did glaciers create the
Great Lakes
?
C. How can scientists tell that
ice ages occurred
or that glaciers existed, if they melted long ago?
D. What is the
geologic record
?
E. How do
fossils
help scientists understand what happened in the past (i.e., geologic record)?
F. In order, what are the
major events
on the
geologic time scale
(i.e., Major Eras)?
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All answer can be found in
Chapter 10.