Question

6 which era contains all written history concerning humans?
jurassic
paleozoic
cenozoic
mesozoic
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Explanation:

The Cenozoic era is the most recent geological era and includes the time period during which humans have existed and written history has occurred. The Jurassic, Paleozoic, and Mesozoic eras pre - date the appearance of humans.

Answer:

C. Cenozoic