Carboniferous Period
The Carboniferous Period was a time period in the Geological Time Scale that came after the Devonian Period and ended at the beginning of the Permian Period. It lasted from 359 to 298 million years ago. The Carboniferous got its name from the large amount of coal deposits that were found during this time scale. In North America, the period is often separated into two, the Mississippian and the Pennsylvanian.
During this time period, the environment had a lot of swamps. The lands barely rose above sea level which flooded the forest which made it into swamps. These extensive swamps also had a lot of coal in them. We can most of our coal reserves today to the Carboniferous time period. Without the Carboniferous time period, we wouldn’t have our coal reserves today which led to significant advancement in our human history.
The global climate during this time was extremely humid and tropical. Again this helped the swamps during the Carboniferous period prosper. This humid and hot climate led to the outbreak of terrestrial plant life. Large trees grew everywhere which gave off so much oxygen. When the plants and tress died during this time, they sank in the water which didn’t have any bacteria. This made them not get decomposed and it formed peat beds. After many years of peat beds over peat beds, it made coal which is why there were a lot of coals coming from this time. The oxygen level during this time was very high. The oxygen level was a lot higher during this time than it is right now in present day Earth. The oxygen level was so high that insects were as big as today’s raccoons. Because of this scientist figured out why so much animal species back then were much bigger than they are now.
During the Carboni...
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...iod. The glacier formation led to the enormous decrease of the sea level which dried out the swamps. Swamps form because of the water level was high and flooded the forest so the low sea level really affected the huge swamps areas of the Carboniferous period. The climate changed from hot and humid to cool. The plants couldn’t adapt to this change so most of the ones that flourished during the time period died off but it led to new plants forming. Most of the amphibians that were prosperous during this time also couldn’t adapt to the environmental climate change so most died off. The insects also couldn’t live through the change. The reptiles however made it through the climate change. They were able to adapt unlike all the other species they lived with during the carboniferous period. These environment changes eventually led to a new time period, the Permian Period.
paper will analyze the quaternary period, specifically the “Holocene epoch from 8000 B.C. to Present; the last 10,000
In conclusion, The Mesolithic Period is part of the upper Paleolithic. It was followed by the pre-pottery Neolithic era and represented a new phase of culture, characterized by the beginning of settled life.
The biggest mass extinction of the past 600 million years (My), the end-Permian event (251 My ago), witnessed the loss of as much as 95% of all species on Earth. Key questions for biologists concern what combination of environmental changes could possibly have had such a devastating effect, the scale and pattern of species loss, and the nature of the recovery. New studies on dating the event, contemporary volcanic activity, and the anatomy of the environmental crisis have changed our perspectives dramatically in the past five years. Evidence on causation is equivocal, with support for either an asteroid impact or mass volcanism, but the latter seems most probable.
The Precambrian Era is when the Earth formed. Earth was barley a spec of dust in outer space and as time went by it gathered ice, rock and more dust particles. It eventually formed into a big rock flying around in space. The Earth was extremely hot and so when it rained the rain would evaporate in mid air or immediately after it hit the ground. But even though it evaporated these great rains cooled the Earth eventually building up water in lower areas creating oceans. The Earths atmosphere was water vapor, carbon dioxide, nitrogen and gases. After awhile oxygen level grew in the atmosphere. The earliest life forms were single celled organisms that lived in the oceans. These organisms used light energy to produce food called photosynthesis. These were called Prokaryotes and Eukaryotes. The evolution of multi celled organisms were Dramatic in change.
Once forests began to be viewed as beneficial, it opened up a whole new lifestyle. The forests and nature might have been an evil and scary place, but it was a place filled with resources and opportunity. Settlers began using trees and wood in a plethora of ways. Not only was it used for families own use, many began logging forests as a business; a very profitable business at that. Once wood started being used for beneficial purposes, a snowball effect occurred by the settlers to cut down every tree in sight and turn it into a profit.
...ecause of the coal that was produced during this time period it can be debated that the Pennsylvanian period, and really the entire Carboniferous period, is the most important period of time in the earths history. If it weren’t for the coal that was produced during this period many of the earths energy problems would not have been solved yet.
could either survive through adaptation or die off due to an inability to adapt rapidly enough. All different types of animals, carnivorous and herbivorous mammals, birds, and reptiles, lived during the Pleistocene epoch and thanks to preservations such as the La Brea tar pits, we are able to observe and study the life forms of millions of years ago.
This paper examines a National Geographic news article pertaining to the history of First Americans called, “On way to New World, First Americans Made a-10,000 Year Pit Stop”. The First Americans may have stayed on the Bering Land Bridge after separating from Siberia, which would explain a few things about the genetic variances between the two groups. Why do researches believe first Americans lived on the Bering Land Bridge? Are the reasons to believe in this justified? This paper attempts to answer such questions.
This breaking up of the mega continent of Pangaea allowed for more diversification of plant species and as the continents continued to break apart, plant life became even more diversified. As the continents shifted and moved from one area of the ocean to another the climates began to change drastically which allowed for plant and dinosaur species both to begin adapting to suit their new ecosystems. All the water that was produced by the split of Pangaea gave the previously hot and dry climate a more humid and drippy subtropical weather. Dry deserts took on a greener look. Before the Mesozoic Era, livings things were confined to only surviving in the oceans. It was not until the Jurassic Period that livings things evolved the capability of living on the land rather than just the ocean. Towards the beginning of the Jurassic, plant life evolved from Bryophytes, the low-growin...
The Paleolithic Age was the earliest period of man. This time period dates back to 15,000 BCE. There are many artifacts from the Paleolithic Age including Lucy (female hominid), Otzi (ice man), and cave art.
The Permian Period occurred around 298 million years ago. It stretched from the Carboniferous Era to the Triassic. Sir Roderick Murchison in the early 1800’s noticed a differentiation among the overlay of the rock formation in the Ural Mountains in Russia. These rocks differed from the older Carboniferous rocks in Britain, and seemed younger than the Triassic rocks of Europe. Murchison named this differentiation after the prehistoric kingdom of Perm, thus the Permian Period.
Since the early Paleolithic period, civilizations have gone through many changes, including the way in which people find their food and the way they settled and live. This change shifted through the Paleolithic period all the way through the Agrarian Revolution. Changes included civilizations shifting from a nomadic type of people to a settled, farming people in the Agrarian Revolution. These changes took place from about 2.5 million years ago, or the beginning of what is called the Paleolithic Period, all the way to some of the first societies. The main thing that was changed was the way in which people found their food and where they settled. These changes brought forth new techniques and new tools to use. These tools and techniques
The foundation of the Great Lakes began around three billion years ago, which is known as the Precambrian Era. The Precambrian Era contains numerous ecological events, which consists of volcanic activity to erosion to the mountains and hills seen today being formed. Then during the Pleistocene Epoch or known as the “Ice Age, occurred between 1.6 million and 10,000 years ago. At least four times during the Pleistocene Epoch, large masses of ice advanced and retreated over the surface of what is now North America. As the glaciers advanced, giant sheets of ice flowed across the land, leveling mountains and carving out massive ...
There are several theories about how the Cambrian Explosion started. There were major changes in marine environments and chemistry from the late Precambrian into the Cambrian, and these also may have impacted the rise of mineralized skeletons among previously soft-bodied organisms. One theory as to what happened is that oxygen in the atmosphere, with the contribution of photosy...
in a habitat, changes in climate, the development or destruction of a mountain range, river