Impact assessment

and unique theories about the K-T extinction. Some theories have good evidence, others have little to none, but there are no guarantees if the evidence is actually good enough. Many people believe that the great extinction happened because of the impact of a cosmic asteroid and created a massive explosion…

In her book The Sixth Extinction, Elizabeth Kolbert writes that there have been five mass extinctions in the history of planet earth. She asserts that currently the earth is on the precipice of a sixth mass extinction. In contrast with the previous five, according to Kolbert this sixth extinction is almost entirely caused by humans and our exploitation of the earth. In each of the book’s thirteen chapters, Kolbert highlights a particular species that is now extinct and analyzes the causes and…

time ago, extinct mysteriously. Paleontologists and scientists have established a variety of possible theories to explain. However, all these theories are still debatable.There are four main possible explanations: Asteroid Impact, Volcano Eruption, Falling Tide and Asteroid Impact theory was established by Luis Alvarez in 1980.Many plants and animals were disappeared abruptly from the fossil record as one moves from layers of rocks documenting the end of the Cretaceous up into rocks…

hit Earth (2) About 65 million years ago an asteroid that is roughly 10 kilometres across, hit Earth on the coast of the Yucatán Peninsula in Mexico. It caused a huge explosion and left a crater that is about 185 kilometres across. This asteroid impact is commonly known to be the reason for the extinction of three quarters of the dinosaurs. (4) The asteroid soared through the sky at more than 40 times the speed of sound. (6) The earth moves through space in its orbit around the sun at…

asteroid was hurtling towards Earth at around 40,000 miles per hour (a little bit faster than the usual speed for asteroids) and slammed into the Earth with around the same force as 90 to100 trillion tons of TNT. As exclaimed by Alexander, “The submerged impact crater spans about 110 miles (180km)” (Alexander 2). However, the asteroid did not kill every single dinosaur, but enough that it made life extremely difficult for the remaining dinosaurs. These factors (small dinosaur population, the…

the water to recede from the land causing a less mild climate as the result. Where the Alveres hypothesis of an extrinsic catastrophe or extraterrestrial in nature catastrophe explains the long term climate change being the effect of the asteroids impact with the Earth causing enough dust to create the climate change. With the two hypothesis that support the long term climate change to be due to the fact that there was enough dust in the air to block out the sun they also explain that this would…

It is a common believe that mass extinction on our planet arose as a result of excessive warming and a deep acidification of the oceans. The asteroid theory states that the asteroid impact might have led to vaporization killing dinosaurs on the way. Dr. Keller’s hypothesis states that volcanic activity created a cascade effect that ended up in the extinction of these animals. Either way, experts commonly agree that dinosaurs could not…

The Cretaceous-Paleogene Boundary, (K-Pg) boundary, and the associated Dinosaur Extinc-tion theories have many precedents and most could be viewed scientifically from certain and known historical accounts. These hypotheses, some more believable than others, can serve a purpose to study current life and potential trends for future evolutionary traits. Evaluating certain aspects of the theory’s within this research, the main focus will be not be on the factual cause of the extinction, but rather…

Under ASQA’s new audit model, five main features of students’ experiences will be focused: • RTO marketing and recruitment: during students recruitment process RTO and its marketing personnel should not provide student service agents and students with misleading information and ensure they are authentic, honest and original. In this context prospective students should be receiving the information which reflect the RTO’s policies and procedures, required performance and behaviours that need to…

The aim is keeping the focus on the child, but giving clear understanding of family life, particularly issues which impact upon the child, as well as elements which act as strengths to help the child. However to reflect individualism where everyone has different needs, thoughts and experiences, separate assessments must be undertaken for each child. The framework for assessments is a holistic evidence-based approach showing a balance outlook of the child’s world by concentrating on three key…