What are fossils of organisms that existed over a wide area but for only a limited
time period called?
index fossils
mold fossils
trace fossils
soft fossils

seeing as no choices were provided, i'll do my best to answer it from knowledge.

job specialization promotes work ethic to the person doing the job. he/she may be strong in the arms and able to lift things, specializing him/her in a job where you lift and carry.

the answer is c, all the other options are things they are known for.

hope this ☺️

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