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.
Absolute geologic time places ages on geologic events or units. Relative time gives qualitative comparisons between events. Example of absolute geologic time: Rock A is 400 million years old. Example of relative geologic time: Rock B is younger than Rock A, but older than Rock C. It would be like saying: I am 35 years old (absolute time), and am older than my brother (relative geologic time).