The Quaternary Period and Other Periods

evidence for environmental reconstruction of the climate in the Quaternary period. Introduction The Quaternary period refers to our current geological time period, it spans over two epochs, the Pleistocene and Holocene, during this geological period, the world has experience incredible climatic changes that have shaped the world we live in today. The Quaternary period has been characterised by numerous periods of glaciation, due to these periods of glaciation there were fluctuating changes in climate and

There has been over twenty periods in the history of the Earth, each having their rise and fall and being known for certain things. The Quaternary Period is known for the start of mankind and we’re still living in the period now! I predict that the Quaternary Period will end with a mass extinction of a dominate life form on Earth-maybe even the extinction of some humans! One reason a mass extinction can be plausible is because a lot of the previous periods have also been caused by mass extinctions

humans, existing today can be traced back to this period. The Cenozoic Era is divided into three periods. Paleogene Period (65-23 million years ago), which consists of the Paleocene, Eocene and Oligocene epochs); Neogene Period (23-2.6 million years ago), which includes the Miocene and Pliocene epochs); Quaternary Period (2.6 million years ago to the present), consisting the Pleistocene and Holocene epochs). The early part of the Cenozoic Period appeared to be warmer than it is today, and the gross

degrees Fahrenheit).The temperature sometimes reached lows of -4 or highs of 4 degrees celsius (24.8 or 39.2 degrees Fahrenheit). They lived in the epoch known as the Pleistocene epoch. The Pleistocene epoch was the first epoch occurred in the Quaternary period and the sixth epoch in the Cenozoic era.The Cenozoic era occurred during the Phanerozoic eon (the current eon). This epoch is best known as the “last ice age” and it lasted from 2.2 million to 11,000 years ago. The “last ice age” began its climate

The Cenozoic era (65mya to present), the current era of Earth, includes three periods, Paleogene period (65-23mya), the Neogene period (23-2.58mya), and the Quaternary period (2.6mya-to present). After, the decline of dinosaurs, mammals took centerstage, and the climate changed drastically. Paleogene period (65-23mya) is the first period of the Cenozoic era, during this period most of the Earth's climate was tropical, and the continents of Earth drifted further apart producing expansive oceans

The main for the purpose of this study was to find out about the tolerance of Listeria monocytogenes towards quaternary ammonium compounds (QAC). The antibacterial effects of disinfectants are crucial for the control of Listeria monocytogenes in food processing environments. Tolerance of L. monocytogenes to sub lethal levels of disinfectants based on QAC is conferred by the resistant determinants qacH and bcrABC. The QAC based disinfectants which are in common use in many food industries are found

disappearance of various species of large mammals” –these words, I believe, demonstrate the theme of Paul S. Martin’s famed hypothesis. Martin’s theory, also known as the Overkill hypothesis, considers that humans were the sole contributors to the Late Quaternary extinction of megafauna that happened in the last 50,000 years in various continents, mainly in the Americas and Australia. According to Martin, as humans started colonizing new areas of the world, they introduced predators, competitors and disease

re-trained and re-skilled to perform other tasks. This would again require a large amount of funds to do so.Sheffield used to be UK's steel industry until the 1980s when the industry declined dramatically with deindustrialization. As a result of industrialisation 120,000 people lost their jobs between 1971-2008, a 74% loss. On the other hand the deindustrialisation of Sheffield has improved the water and air quality in the area. During the industrial period the factories would expel large amounts

There are a lot of misconceptions while talking about fossils. Fossils are not limited to the remains of a once living thing, but rather the evidence of life that existed in the past. This means that a fossil can be a dinosaur footprint, the form of a body on dry mud, bones, etc. We call the formation of fossils “fossilisation”. Fossils form in a really unique way, and it depends on several factors. It is quite hard to have all the favorable conditions to form a fossil. The corpse of the dead

The Medieval Warm period was a time of warm temperature in the North Atlantic that that began around 950 AD and has also been proven to show that other climate related circumstances may have been involved with this event. The Little Ice Age was a period of cool climate following the Medieval Warm Period. Global Warming has affected many different aspects of the environment including the increased ocean temperature