Dinosaurs Are Endotherms Summary

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.

While the author of the article believes that Brachiosaurus were aquatic animals, the professor disagrees with this statement. The professor points out that in spite of the fact that some species of dinosaur would spend a great deal of time in water, there was no possible that Brachiosaurus were aquatic ones. To strengthen her point, the professor provides sufficient evidence respectively to the points made in the article.

In Stephen Jay Gould’s “Sex, Drugs, Disasters, and the Extinction of Dinosaurs”, Gould investigates three possible theories hypothesizing the reason behind the extinction of dinosaurs. The first theory suggests that dinosaurs became extinct due to a rise in temperature, which caused sperm to die, leading to the sterilization of male dinosaurs. The second hypothesis offer that many dinosaurs consumed bitter plants that contained psychoactive agents which their lives could not detoxify out of their systems. The last speculation about the dinosaur’s extinction is that a large cloud of dust formed in the atmosphere after an asteroid hit Earth’s surface. This dust cloud blocked out the sunlight, causing temperatures to drop and made photosynthesis impossible. Gould uses these three theories to lead to his central claim that science isn’t just about making fascinating claims, but should have a well developed hypothesis.

The reading passage proposes three theories which support the idea that a dinosaur which is called edmontosaurus survived in the winter by migrating to the south, the more hospitable region than the extremely cold in the North Slope. However, the professor in the listening respectively contradicts each theory in the reading passage by using strong evidence as support.

who theorize that volcanic eruptions could have been the cause for the extinction of dinosaurs

The reading and the lecture are both theories of why dinasours were endotherms or cold blooded aninmals. Whereas as the author of the reading states that there is not enough evidence to assume that dinosaurs were endotherms. The lecture casts doubt on the main points made in the reading by providing three reasons.

Throughout the scientific article there are many examples of factors that decrease the reliability of the article ‘did humans and dinosaurs co-exist’? Dr Manfred E. Kober has no degree or speciality in the evolution of Homo Genus, instead he specialises in theology with Th.M. and Th.D. degrees. This subsequently lowers his reliability as a source because he is a Theologist who believes in the theory of creation. His views may present bias as he is from the perspective that evolution does not exist – such beliefs go against the mainstream scientific views commonly accepted today. He also states that Homo Habilis and Homo erectus “Lived side by side about 1.5 million years ago in parts of Kenya’. There is no evidence that Homo Habilis

First, the argument stated in the article readily assumes that dinasours fossils are located in the polar regions and this is the evidence to determine that dinasours were endhoterm. In contrast, the professor provides information that these polar regions were much warmer than today. In addition, she states that when the climate was so cold in these regions, dinasours were migrating or hibernating. That’s why we can not easily assume that dinasours were endhoterms.

The reading states that there are several different theories about how agnostids may have lived and provides three reasons of support. However, the professor states that there are serious weaknesses in each of the theories represented in the reading passage and the author refutes each of the authors' reasons.

The reading and the lecture discuss weather the migration hypothesis is true for the edomontosaurs- the elephant like dinosaurs to prove the North Slope as their habitat. The lecturer puts forth three aspects, each of which has casts doubt on the three points presented in the reading passage.

The passage discusses three possible theories, based on the evidence from their fossils, which might account for Agnostids lifestyle. The professor, however, believes that none of these theories are strong or accurate enough to rely on. The professor's arguments to oppose each of these proposed theories are as follows.

In this set of material, the reading passage explains that dinosaurs were endotherms because there are three evidences that prove this theory. The lecturer, however, is doubtful about these three evidences that suggest dinosaurs were endotherms.

Because warm blooded animals don’t have to rely on their environment for body temperature, they are able to hunt at any time of the day or in any season, which is a great advantage over cold-blooded animals.  Therefore this “type of intense activity needs a fast metabolism which is much too high for a cold-blooded animal.  Secondly, cold-blooded animals have a hard time living in cold climates and dinosaur fossils have been found in the colder environments” (Eschberger).  However, scientists believe warm blooded animals would have suffered from the heat in warmer climates, where many fossils have been discovered.  Beverly Eschberger discusses how dinosaurs must have been only warm blooded animals due to the factors of, bone structure, and histology, growth rates, predator to prey ratios, speed and agility, rate of evolution, similarities with birds, and insulation.  She also explains the disadvantages of being a warm blooded animal: “a much larger expenditure of energy to maintain elevated metabolism and a commensurate increase in food requirements” (Eschberger).  Just as the conclusion that dinosaurs were truly warm blooded becomes clearer, factors from the cold blooded side switch everything around.  Gigantothermy, rate of food supply, respiratory turbinates and lung structure all cause scientists to believe dinosaurs were in fact cold-blooded.  There have been many attempts to find the real resolution of whether or not dinosaurs were warm or cold

The author of the issue states that dinosaurs, in spite of other modern reptiles would be endotherm and provides some reasons to support. Conversely, the professor believes that dinosaurs would not to be endotherms and refutes each author's points.

Rapid climate change also ends up on the suspect list of possible dinosaur extinction events. During the latter part of the Cretaceous Period continents broke up causing volcanoes to erupt and fill the sky with gas and ash resulting in a drastic climate change (“Dinosaurs Climate Change and Biodiversity”). The shifting of continents changed the Earth’s landscape, altering weather patterns and overall climate (“Dinosaur Extinction Theories”). Also, over a long period of time, climate gradually changed. Ocean habits changed, temperatures grew much more extreme causing scorching summers and frigid winters (Norell, Dingus, and Gaffney). Radical temperature changes like these led to a green-house effect, making life for the dinosaurs a lot