1) What is the approximate percentage of Earth's history during which humans have existed,

compared to the age of Earth?

A)
0.04%

B)
1.79%

C)
4.65%

D)
8.32%

How much time has elapsed from the very beginning of "the memior of the conquistador bernal diaz del castillo" to the end? a. castillo's whole life b. a quarter of an hour c. a few weeks d. a decade