Which statement correctly locates the formation of the Earth and the appearance of the first humans on the cosmic calendar, which compresses the 14- billion year history of the universe into one "year," where "now" is exactly midnight, Dec 31?
A)Earth forms in early September, life begins in November, and humans appear on Dec 15.
B)Earth forms in early September, life begins in late September, humans appear a few hours before midnight, Dec 31.
C)Earth forms in January, life begins in April, and humans appear in early December.
D)Earth forms in January, life begins in September, and humans appear in October.

Question

Quizplus · Accepted Answer

According to the cosmic calendar, the formation of Earth is placed in early September and the appearance of the first humans is placed just a few hours before midnight on December 31. Life begins in late September, which would make the most sense if humans appeared close to the end of the year. Therefore, option B is the correct choice.

Which Statement Correctly Locates the Formation of the Earth and the Appearance