Question

Sadie is drawing a timeline in order to compare the relative length of four major divisions of time throughout Earth's history. In order to draw her timeline to scale, she is using the information in the table below.

On her timeline, she plans to represent the Cenozoic era using a line that is 0.35 cm long, and the Mesozoic era using a line that is approximately 1 cm long. Based on these proportions, approximately how long should she draw the line representing the Precambrian?
A. 2 cm
B. 5 cm
C. 20 cm
D. 10 cm

Answer 1

Answer:The Answer is C

Explanation:

In order to compare the relative length of the four divisions of time, Sadie is most likely using the data in the duration column of the data table. Given that the Precambrian lasted for 3,956 millions of years, which is approximately 20 times longer than the Mesozoic era (186 million years), the line she draws should be approximately 20 cm long.