The Precambrian ... about 3 billion years.
The order of units of geologic time from longest to shortest is: eon, era, period, epoch.
The geologic time intervals from longest to shortest are eon, era, period, epoch, and age. This hierarchical sequence represents the largest divisions (eons) to the smallest subdivisions (ages) of Earth's history.
eon>era>period
The Precambrian era spanned approximately 4 billion years, making it the longest geologic time period in Earth's history.
The Cenozoic Era is the most recent geologic era and has lasted for around 65 million years, making it the longest era to date. During this era, mammals diversified and dominated the Earth's ecosystems.
The order of units of geologic time from longest to shortest is: eon, era, period, epoch.
precambrian times
Precambrian Era.
The geologic time intervals from longest to shortest are eon, era, period, epoch, and age. This hierarchical sequence represents the largest divisions (eons) to the smallest subdivisions (ages) of Earth's history.
The units of geologic time, from shortest to longest, are as follows: epoch, period, era, and eon. An epoch is the smallest unit, representing a subdivision of a period, which is a division of an era. Eras are then grouped into eons, the largest units of geologic time that encompass significant spans of Earth's history.
eon>era>period
an era is a very long span of geologic time
The Precambrian era spanned approximately 4 billion years, making it the longest geologic time period in Earth's history.
The Cenozoic Era is the most recent geologic era and has lasted for around 65 million years, making it the longest era to date. During this era, mammals diversified and dominated the Earth's ecosystems.
Eon, epoch, period, era
The longest era in geologic time is the Precambrian era, which lasted from about 4.6 billion years ago to 541 million years ago. It encompasses about 90% of Earth's history and is divided into several eons, including the Hadean, Archean, and Proterozoic.
The correct order representing units of geologic time in increasing order is B. Eon, era, period, epoch. This hierarchy reflects the largest to smallest divisions of geologic time, with eons being the longest intervals and epochs being the shortest.