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Cretaceous Era Essay Examples
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An Introduction to the History of the Cretaceous Extinction
There are many therioes and ideas on what caused the Cretaceous extinction but Im going to focus more on the asteriod theory. Some therioes include: volcanic activity, an exploding supernova, and starvation etc. and I will cover them but mainly on the asteriod theory. The reason is because the asteriod theory is the most co...
The Historical and Social Research of the Victorian Era
Historical and Social Research: The Victorian Era Politics (1850 1900) The Victorian era was a prominent one for political power. It saw the rise and fall of Queen Victoria (her reign was from June 20th 1837 to January 22nd, 1901). She died at age 81 and ruled over Great Britain and Ireland after her husband and firs...
Mass Extinction in Ordivician, Permian, Triassic and Cretaceous Eras
The history of life has been punctuated by brief episodes of mass extinction. The five major ones ended the Ordivician Devonian, Permian, Triassic, and Cretaceous eras (see fig ure below ). A general pattern was found when the extinctions were studied: 1. Extinction strikes in both the land and the sea. 2. On the land,...
An Analysis of the Earth's History into Different Parts Called Eras and Periods
Geology Final The Earth is 4.5 billion years old. We split Earth's history into different parts called eras and we split the eras into smaller parts called periods. While these periods have some similarities, they are all very unique. When comparing and contrasting periods it's best to use periods from different eras a...
The Ever-Changing Geological Characteristics of Pennsylvania
The earth is an ever-changing chunk of rock to put it at the lowest level of comprehension available. This rock that we call home is brewing with billions of life forms and is constantly changing every day. This can be attributed to the various cycles that are at work on this planet of our, from the hydrological system to t...
US Goals and Outlooks Changed During the Progressive Era
During the Progressive Era, the United States goals and outlooks changed dramatically. The economy was going from domestic to worldwide. America's interest expanded to China, the Pacific, and the Caribbean. People say that Teddy Roosevelt was a visionary and a genius. He truly held both these traits, the nation would not be...
The Evolution of Art: The Victorian and the Romantic Era
Art has evolved in different eras of time from the most ancient to recent ones and each with its distinctive characteristics and significance. A critical look at each specific era has been as a result of the previous era's events and happenings and the tie that brought them together. Preceding the Victorian Era was the Rom...
The Three Major Eras of Law Enforcement Throughout History
Since the founding of this country, to the wild west, and up to the present, the agenda of the policing bodies have been clear: to uphold and enforce the laws of our society. Of course the way they do this today had undergone changes from the first police forces of early America, law enforcement has seen trends come and go....
Closing of the Cretaceous Period Marked a Major Transition in Earth's History
The tertiary consisted of two main epochs. The Paleocene, the Eocene and the Oligocene, which make up the Paleogene; and the Miocene and Pliocene, which make up the Neogene. The close of the Cretaceous Period marked a major transition in Earths history. Ammonoids and marine reptiles disappeared from the sea. Marine taxa th...
A Description of the Extinction of the Dinosaurs 65 Million Years Ago
Something happened 65 million years ago, at the end of the Cretaceous period, something so devastating that it altered the course of life on earth. It seems like it happened so sudden, as geologic time goes, that almost all the dinosaurs living on earth disappeared. So how did these dominant creatures just die off? Was it a...