Minor Mass Deprivation

This researcher proposes that the dinosaurs did not die of heat, in fact she thinks the opposite, that they froze to death instead. Both articles have the same idea about a meteorite hitting the earth yet there is no concrete evidence as to what caused the meteorite to strike and what it did when it got here.

Large amounts of iridium – a chemical element that is not a part of the Earth’s crust composition – were originally found in rocks of Europe and United States, and have been found everywhere ever since. Iridium, common in meteorites, is a testable evidence of the disaster hypothesis. Gould continues that the Cretaceous debacle, which is one of five episodes of mass dying, occurred at the same time as the large comet might have smashed into the Earth. The author believes this is not merely a coincidence, rather, it is a proof of the cause-effect relationship. The demise of a wide range of habitats along with the extinction of dinosaurs gives an inestimable advantage to the disaster theory over other claims, the author adds. The comet struck the Earth, and habitats, from terrestrial to marine, died with geological suddenness. Finally, this hypothesis has had an impact on the study of an atomic war and its consequences. A nuclear war, Gould says, may cause a huge drop in temperatures and result in the extinction of humanity. Testable evidence, study, development, contribution – all this makes good science.

Previous climate change predictions have provided scientists, archaeologist and ecologists with information about the past and future of humans. These indications are backed up by scientific research based off of the physics of the Earth’s atmosphere, ocean, land and ice. In addition, many researchers have recently turned their focus to past civilizations and their downfall. With information from Mark Kinver’s “Roman Rise and Fall ‘Recorded in Trees’” studies show that from the demise of the Argaric society to the fall of the Mayan, and Ancient Roman Empire, climate change has played a key role in regards to civilizations collapse and nuclear annihilation.

He narrowed his hunt down to a location in Denmark, where he had sent a colleague to perform an iridium analysis test at ("Asteroids and Dinosaurs: Unexpected Twists and an Unfinished Story," n.d.). When the results came back, Alvarez knew that whatever happened had not been a small-scale disaster. Once again, Alvarez was back to asking questions. What caused the increased iridium levels at the KT boundary? Except this time, he realized that his observations supported the ten year old hypothesis that had been proposed by paleontologist Dale Russell and physicist Wallace Tucker ("Asteroids and Dinosaurs: Unexpected Twists and an Unfinished Story," n.d.). They brought up the possibility of a supernova being the cause of dinosaur extinction. Supernovas are known to release high amounts of iridium, so such a hypothesis fit perfectly with Alvarez’s team’s discovery. However, the hope of having found a conclusion was short-lived. Luis Alvarez had mentioned that if said supernova had occurred that it would have released amounts of plutonium which would have been found alongside the iridium; no plutonium was found at either site. After more digging, the team came up with a new hypothesis ("Asteroids and Dinosaurs: Unexpected Twists and an Unfinished Story," n.d.). Perhaps an asteroid had struck Earth towards the end of the Cretaceous period, blowing enough dust into the atmosphere to

Such an era came to a staggering end from the grand celestial meteoroid which assaulted life into

8. The periods in which there were mass extinctions are Permian – volcanic eruptions which spewed lava and put CO2 into the air which warmed the climate an estimated 6 degrees Celsius. The resulting of oxygen deficiency. And Cretaceous – asteroid or comet

“The Great Dying” was the largest mass extinction ever recorder in the Earth’s history. It was the death of approximately 90% of all living species, such as, the trilobites, sea scorpions, and coral dating back to 254 million years ago (Randall). It is suspected that the eruption of many volcanoes in the Siberian Traps was the fallout of these species because the eruption killed off almost all plant life, leaving nothing for the animals alive. However, researchers have found new evidence to suggest that acid rain was the cause for this destruction (Randall).

Which data indicates the need for the nurse to evaluate Mrs. Rusk further for altered nutrition? (Select all that apply.)

L. Vardiman, A.A. Snelling and E.F. Chaffin (Eds.), Radioisotopes and the Age of the Earth: Results of a Young-Earth Creationist Research Initiative, Institute for Creation Research, Santee, California, and Creation Research Society, St. Joseph, Missouri, 2000.

Throughout history climates have drastically changed. There have been shifts from warm climates to the Ice Ages (Cunningham & Cunningham, 2009, p.204). Evidence suggests there have been at least a dozen abrupt climate changes throughout the history of the earth. There are a few suspected reasons for these past climate changes. One reason may be that asteroids hitting the earth and volcanic eruptions caused some of them. A further assumption is that 22-year solar magnetic cycles and 11-year sunspot cycles played a part in the changes. A further possibility is that a regular shifting in the angle of the moon orbiting earth causing changing tides and atmospheric circulation affects the global climate (Cunningham & Cunningham, 2009,

Although no debate exists regarding whether this event occurred, several theories have been created explaining the reason why it occurred. One such theory is the Younger Dryas Impact Hypothesis, also known as the Clovis Comet Hypothesis, which proposes that a comet or asteroid hit North America, killing off many animals and human instantly, and non-adapting species were also eradicated due to starvation (video). One critique of this hypothesis is that no crater has been found on Earth’s surface; however, it is likely that the comet hit the glacier, which ultimately melted and left no physical sign. Another hypothesis depends on the idea of a thermohaline circulation shutdown due to the changes in ocean circulation (“Abrupt Climate Change”, 2003). A problem with this hypothesis, however, is that another glacier melting event occurred following the Younger Dryas, and it did not create a massive climate change. Another theory states that the climate change was brought on by Earth’s orbital changes, but much more information is needed regarding this

Looking into one of the three articles “Some Consequences of Having too Little,” written and studied by Anuj K. Shah, Sendhil Mullainathan, and Eldar Shafir, people who don’t have much of one particular thing tend to want more (Shah, Mullainathan and Shafir 683). Furthermore, the desire to want more turns into borrowing (Shah, Mullainathan and Shafir 683). Once you have borrowed from a certain source or sources more than once that conscious to stop goes away (Shah, Mullainathan and Shafir 683). Surely, over borrowing takes place and rather than the action taking a halt, it folds over (Shah, Mullainathan and Shafir 683). This hypothesis has led to experiments showing how scarcity affects the mind and behavioral patterns which can lead to the

Ever since the history of Earth has been studied using fossil records, extinctions have always been the object of fascination and interest, particularly the mass extinctions that occurred throughout Earth's history. A mass extinction can be caused by disruptive global environmental changes, where large numbers of species have become extinct (Urry et al. 2008). There have been five major extinctions documented based on fossil records over the past 500 million years, but the Cretaceous (KT boundary extinction – a name that meant it began the Tertiary era) extinction caught a lot of

The report concludes, again with “high confidence”, that anthropogenic (human caused) warming has had a discernible influence on many of our planets physical and biological systems. While there are limitations and gaps in the knowledge available, particularly from undeveloped countries, the knowledge available allowed the group to attribute most of the observed increase in the globally averaged temperature since the mid-20th century to the observed increase in anthropogenic greenhouse gas concentrations. The analysis was necessarily limited in the number of systems and locations considered. In addition, natural temperature variability is larger at the regional than at the global scale, thus affecting identification of changes due to external forcing and at the regional scale other factors such as land-use change and pollution, are an environmental

This final blow would have sent earth into a nuclear winter. According to this theory, dust caused by the asteroid collision disrupted plant growth by blocking out the sunlight needed for photosynthesis for nearly a year. A chain reaction occurred as plants died off, so did the herbivores relying on the plants, and then the carnivores that relied on the herbivores. Around 75% of species became extinct, including dinosaurs, mammals, giant marine lizards, fish, birds, and insects. Meanwhile, seawater flooded around 40% of the world’s continents ("Mass Extinctions").