Best Answer: Hi, Answer: estÃ¡ means is. Comments: There are two words for is in Spanish: estar and ser. EstÃ¡ is the third person singular, present indicative ...
The Largest division in the geological time scale is the Precambrian Era.It lasted from around 4.6 billion years ago to 570 million years ago.
1,251 Contributions. The geologic time scale is the system of chronology that organizes the Earth's history based on stratigraphy, or the study of Earth's rock layers and their ages. The geologicâ¦ time scale is divided into several spans of time. From longest to shortest they are: Eons, eras, periods, epochs, and ages.