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Earth Sciences 13 Online
OpenStudy (heathero):

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

OpenStudy (keigh2015):

It's D

OpenStudy (gottennis121):

Please no direct answers, Zach. :)

OpenStudy (keigh2015):

Ok, sorry.

OpenStudy (gottennis121):

The reason that it is D is because I know it is takes a long time for any fossil to decay and change, but also that they are all around the world. So, it must be D. :)

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