The first terrestrial arthropods began to occupy land during the
A) Cretaceous.
B) Cambrian.
C) Holocene.
D) Silurian.
E) Ordovician.
Correct Answer:
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Q63: The Cenozoic era began about _ years
Q64: During which of the following geological periods
Q65: In undisturbed sedimentary rock, strata from which
Q66: Which of the following is the longest
Q67: The current geological period is the
A) Tertiary.
B)
Q69: During the Cenozoic, _ experienced major radiations.
A)
Q70: The period between the time when life
Q71: Which of the following represents a correct
Q72: Which period did not end with mass
Q73: The Cambrian explosion started _ the Cambrian
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