How many major mass extinction events have occurred throughout Earth's history?
A) 5
B) 10
C) 2
D) 1
Correct Answer:
Verified
Q39: Change in the ground elevation of Earth's
Q40: How old are the earliest fossil remains?
A)approximately
Q41: The lithosphere is composed of =
A)uppermost crust.
B)lowermost
Q42: The densest part of Earth is the
A)oceanic
Q43: Geologist James Hutton advanced the principle of
A)uniformitarianism.
B)uniformity.
C)conformity.
D)universalism.
Q45: Magnetic reversals of Earth's magnetic field are
Q46: In terms of its shape,Earth is
A)a perfect
Q47: The typical depth of ocean basins is
A)1
Q48: The average density of the bulk earth
Q49: The first appearance of Homo sapiens on
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