Question

2 what is the main purpose of the geologic time scale? a to organize the major eras of earths history b to compare very short and very long periods of time c to compete with other, non - geologic time scales d to help people understand that the planet is really old

Explanation:

The geologic time scale is a system that divides Earth's history into distinct time intervals (eras, periods, etc.) to organize and understand the sequence of geological and biological events. Option A aligns with this purpose. Option B is incorrect as it's not about comparing short and long time periods in that way. Option C is wrong because the geologic time scale isn't for competing with other scales. Option D is not the main purpose; while it shows Earth's age, organizing Earth's history eras is the primary goal.

Answer:

A. To organize the major eras of Earth's history