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.
The Cenozoic Era divides into several periods, including the Paleogene, Neogene and Quaternary Periods. The Paleogene Period spans the first part of the Cenozoic and is geologically distinct from the rest of the era. During this time, the Earth saw a warming trend. Sea temperatures increased, and the oceans supported more life forms.