which best describes eras and periods?\nfras have a smaller time span than periods.\neras and periods are…

which best describes eras and periods?\nfras have a smaller time span than periods.\neras and periods are independent of each other.\neras and periods both appear at the start of the cambrian period.\neras were more recently established on the time scale than periods.

which best describes eras and periods?\nfras have a smaller time span than periods.\neras and periods are independent of each other.\neras and periods both appear at the start of the cambrian period.\neras were more recently established on the time scale than periods.

Answer

Brief Explanations:

In geological time - scale, eras are larger units of time compared to periods. Eras are composed of one or more periods. They are not independent as periods are part of eras. The Cambrian period is part of an era (Paleozoic era). Eras are older and larger - scale time divisions than periods.

Answer:

None of the given options are correct. In geological time - scale, eras are larger time spans than periods. Eras are composed of multiple periods and they are not independent. The Cambrian period is within an era. And eras are not more recently established than periods on the time scale; in fact, they are larger and older time divisions.