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OpenStudy (heathero):
Changes in the trilobite exoskeleton can be attributed to ____. a. changing environments c. inter-species mating b. competition for survival d. both a and b
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OpenStudy (keigh2015):
I think it is d, what do you think heather?
OpenStudy (heathero):
d?
OpenStudy (keigh2015):
Ok, then I say go with d.
OpenStudy (-spencerbraz-):
its d
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