Trilobites are index fossils because they ____.
2 answers:
The answer is D.
They are index fossils because they did all of those things
Trilobites are index fossils because they ____.
a.
changed slowly through time
c.
exhibit specific characteristics
b.
lived over large areas of the world
d.
all of the above
Please select the best answer from the choices provided
A
B
C
D
D. all of the above
Hope that helps
~May
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