Question

The ____________________ Era accounts for most of the history of Earth. a. Precambrian c. Mesozoic b. Paleozoic d. Cenozoic

Answer 1

a. Precambrian

Step-by-step explanation:

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Answer 2

It is the "a. precambrian era" is by far the longest of these geological periods. It began at the the time Earth was first created and reach approximately four billion years.