Respuesta :
The history of the Earth is divided into four time periods according to the geologic time scale : Precambrian Time, Paleozoic Era, Mesozoic Era and Cenozoic Era.
Give an account on Geological Time Scale.
Geological Timescale : In the range of 3 and 3.5 billion years old are the oldest fossils. These bacteria date back to an earlier time when life on Earth was much simpler. About 565 million years ago, more sophisticated species began to emerge in the waters, and about 542 million years ago, they significantly increased in number. The Phanerozoic Eon, a period of geological time that begins at this epoch, is the most recent moment in history. Fossils are prevalent during the Phanerozoic period, which means "visible life".
Phanerozoic Eon : There are three eras that make up the Phanerozoic Eon: the Paleozoic, Mesozoic, and Cenozoic eras. The kind of fossils that were found inspired the names of these.
Paleozoic era : The Cambrian radiation, which saw a significant increase in the variety of marine animals, marks the start of the Paleozoic era. The greatest extinction of life on Earth marks its conclusion. At the conclusion of the Ordovician and Devonian periods, there were additional significant extinction events. The evolution of plants and animals to live on land also occurred during the Paleozoic Era.
Mesozoic and Cenozoic eras : The youngest portion of the Phanerozoic is made up of the Mesozoic and Cenozoic eras. Mammals and dinosaurs both underwent evolutionary change during the Triassic Epoch, the most recent period of the Mesozoic Era. At the conclusion of the Cretaceous Period, the Mesozoic saw a significant extinction. Except for birds, every dinosaur perished during this extinction. The Triassic Period ended with a second mass extinction. Communities began to look more contemporary during the Cenozoic Era. Homo sapiens, our species, had evolved by the Neogene Period's very end.
To know more about, Geological Timescale, visit :
https://brainly.com/question/10134253
#SPJ4
