An era is a 100 years. A period is a time within the era.
you get your peridos 2 every 10 years
March 20th.
Dinosaurs
Eras was created in 1976.
Eras is already plural. The singular is era.
Eons are divided into eras, which are further divided into periods. Each period is then subdivided into epochs.
Geological eras can be divided into periods, epochs and ages.
Geological eras can be divided into periods, epochs and ages.
Willy Eras was born on 1980-09-10.
This question needs to be more specific. Life in different eras was different...but perhaps provide specific eras for a better result.
Most scientists agree that there are 3 eras for every eon.
Eras are subdivisions of larger units of geologic time called eons.