Profile of Camarasaurus

True heavyweights like Brachiosaurus and Apatosaurus get all the press, but pound for pound, the most common sauropod of late Jurassic North America was Camarasaurus. This medium-sized plant-eater, which weighed only about 20 tons (compared to near 100 tons for the largest sauropods and titanosaurs), is believed to have roamed the western plains in sizable herds, and its juveniles, aged and ailing were probably a prime source of food for the hungry theropods of its day (the most likely antagonist being Allosaurus). Name: Camarasaurus (Greek for chambered lizard); pronounced cam-AH-rah-SORE-us Habitat: Plains of North America Historical Period: Late Jurassic (150-145 million years ago) Size and Weight: About 60 feet long and 20 tons Diet: Plants Distinguishing Characteristics: Large, boxy skull; hollow vertebrae; single claw on front feet Paleontologists believe that Camarasaurus subsisted on more challenging fare than its larger sauropod cousins since its teeth were adapted to slicing and shredding especially tough vegetation. Like other plant-eating dinosaurs, Camarasaurus may also have swallowed small stones--called gastroliths--to help grind down food in its massive gut, though direct evidence for this is lacking. (By the way, this dinosaurs name, Greek for chambered lizard, refers not to the stomach of Camarasaurus but to its head, which contained numerous large openings that probably served some kind of cooling function.) Does the unusual prevalence of Camarasaurus specimens (especially in the stretch of the Morrison Formation spanning Colorado, Wyoming, and Utah) mean that this sauropod vastly outnumbered its more famous relatives? Not necessarily: for one thing, just because a given dinosaur happens to persist in the fossil record speaks more about the vagaries of the preservation process than the size of its population. On the other hand, it only makes sense that the western U.S. could support a larger population of medium-sized sauropods, compared to smaller herds of 50- and 75-ton behemoths, so Camarasaurus may well have outnumbered the likes Apatosaurus and Diplodocus. The first fossil specimens of Camarasaurus were discovered in Colorado, in 1877, and quickly purchased by the famous American paleontologist Edward Drinker Cope (who was probably afraid that his arch-rival Othniel C. Marsh would beat him to the prize). It was Cope who had the honor of naming Camarasaurus, but that didnt prevent Marsh from bestowing the genus name Morosaurus on some very similar specimens he discovered later (and which turned out to be synonymous with the already-named Camarasaurus, which is why you wont find Morosaurus on any modern lists of dinosaurs). Interestingly, the profusion of Camarasaurus fossils has allowed paleontologists to investigate this dinosaurs pathology--the various diseases, ailments, wounds and contusions that all dinosaurs suffered at one time or another during the Mesozoic Era. For example, one pelvic bone bears evidence of an Allosaurus bite mark (its not known whether or not this individual survived this attack), and another fossil shows possible signs of arthritis (which may or may not, as in human beings, have been an indication that this dinosaur reached old age).

Article Review Electronic Commerce Essay - 1164 Words

The World Wide Web(WWW)has been providing extensive opportunities for merchants to conduct their businesses online. Electronic commerce is a new form of online exchange in which most transactions occur among parties that have never met. As in traditional exchanges, concerns about trust have been identified as a barrier to customer for engaging in e-commerce and a barrier for the success of electronic commerce. In the traditional market, a typical customer would be limited to choosing from a few local retailers. In the age of the internet, one can choose from a verity of online retailers located anywhere in the world, leading to breakdown of borders. A physical separation between the buyer and the seller,†¦show more content†¦The different types of uncertainty or risk in online commerce are relevant for the understanding of trust . This is the context for Nena Lim(2003), Consumers perceived risk: sources versus consequences. Lim(2003) claims that, consumers are vulnerable and they are likely to expose themselves to loss. According to Lim, In the context of online commerce, risk can be divided into two main types—behavioral risk and environmental risk. Behavioral risk is caused by the actors involved in the transaction. For example, online retailers who have a chance to behave in opportunistic way by taking advantage of the distance and impersonal nature of e- commerce. It includes product risks, psychological risks, and retailer performance risks. Environmental risk is caused by the unpredictable and complex nature of the Internet as transaction medium, which is beyond the control of online retailers and consumers. It includes financial risks and privacy risks. Lim states that, Buying on the Internet presents numerous risks for consumers and the transaction process itself is perceived as risky. 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Early Childhood Education And Healthcare †Myassignmenthelp.Com

Question: Discuss About The Early Childhood Education And Healthcare? Answer: Introducation Australia is a country with a mixture of cultures that have paved way for different identities. Without many objections, the presence of diverse cultures is the primary cause of social differences striking the living of the Australian citizens. Identity is a term that aims to describe an individual based on the gender, ethnicity, and race. Briefly, there are various definitions underlying character. Erikson, a very famous sociologist, defines identity as a sense of selfhood that makes an individual distinct and unique from others. In this case, we shall focus our attention regarding identity by setting it in an Eriksonian way. Focusing on education in Australia, in general, will be helpful in understanding the subject In a broad perspective, identity takes into account the way people see themselves while undertaking their daily routine within a group of individuals. In Australia, the character is perceived differently because both the indigenous and non-indigenous citizens dominate the country (Skeggs, 2008). Taking the Eriksonian definition of identity enables us to understand the reason behind the presence of different identities that underlie Australia as a nation. It is true that uniqueness of a person is the grassroots of the identity (Skeggs, 2008). Similarly, culture and identity seem to match since it is through the existence of new distinct characters that pave the way for different cultures. For instance, the Aboriginal Australians are believed to have originated from Africa. In that connection, they are bound to retain traditional customs such as hunting and gathering. On the other hand, the non-indigenous Australians that came right after colonization seem to have their specific ways o f doing things. Spencer (2014) postulates that race and ethnicity are among the influences that strike different identities within various groups of people. Obviously, the Aboriginal Australians are black while their non-indigenous counterparts are white. Due to such divergence, it is probable that the aboriginals will seek to maintain their identity by strictly forming an interaction platform based on their color. On the other hand, the non-indigenous Australians will not entertain their black counterparts, but instead, they will maintain their identity based on their color. Since most of the Australians are white, that is a clear indication that non-natives dominate the nation hence proving excellent personalities a great deal (Spencer, 2014). Ethnicity also serves as a source of identity whereby non-natives from European origin will carry on with their European way of life thus creating a barrier for similarities. Education and religion and health sector are the main social factors helping in the definition of identity. Gomes, Berry, Alzougool and Chang (2014) suggest that although the government of Australia has diversified the education sector, the character aspect remains intact. Most of the Aboriginal parents significantly dwell much on taking their children to schools manned by their original counterparts while non-indigenous parents follow suit. There are distinct health services and religion upheaval existing between the native and non-native Australians. In fact, education comes out clearly to illustrate the basis of identity since there is a great commotion between the two originalities. Social differences are the social divisions that occur within a society based on race, gender, and occupation. On the other hand, social groups are the set of people who positively interact and share a common sense of unity. Australia is a nation that is trying the best it can to harmonize and stabilize the existing social groups (Ruhanen Whitford, 2016). However, we construct differences once we stress much on our core origin, a factor that soils up social unity. For instance, Australia integrates the social groups under one holding in matters pertaining education. However, Aboriginals do not believe in the teachings of the non-indigenous experts hence striking difference. In the health sector, also aboriginals tend to ignore the health services provided by the non-natives hence disrupting peace and unity of the social groups. In general, Australian schooling has experienced several impacts that can be traced from social differences at the disposal of citizens. According to Koschorke, Evans-Lacko, Sartorius and Thornicroft (2017), Aboriginals claim that all the land belongs to them and that non-natives are strangers who should not be condoned. For example, the Aboriginal parents disregard the European model of education in Australia. The repercussion is that children do not have much interest in the studies hence recording poor performance contrary to the non-natives who tend to absorb every concept taught. Hart, Moore, and Laverty (2017) posit that Aboriginal children have little retention and high absence rate hence compelling them towards demanding jobs that are low paying. In short, exposure to failure is the major impact of the social difference in Australian schooling particularly the aboriginals. In conclusion, seeking to discover the identity of Australians is the cause of social differences underlying the nation. Aboriginals tend to value their identity more compared to non-indigenous Australians hence proving the impact of social differences severe. Briefly, seeking for identity as a nation is the only way by which Australia will achieve national goals and objectives. References Gomes, C., Berry, M., Alzougool, B., Chang, S. (2014). Home away from home: International students and their identity-based social networks in Australia.Journal of International Students,4(1), 2-15. Hart, M. B., Moore, M. J., Laverty, M. (2017). Improving Indigenous health through education.The Medical Journal of Australia,207(1), 11-12. Koschorke, M., Evans-Lacko, S., Sartorius, N., Thornicroft, G. (2017). Stigma in different cultures. InThe Stigma of Mental Illness-End of the Story?(pp. 67-82). Springer International Publishing. Ruhanen, L., Whitford, M. (2016). Racism as an inhibitor to the organizational legitimacy of Indigenous tourism businesses in Australia.Current Issues in Tourism, 1-15. Skeggs, B. (2008). The problem with identity. In Angel M.Y. Lin (ed.) Problematizing Identity: Everyday struggles in language, culture, and education. New York: Routledge. Spencer, S. (2014).Race and ethnicity: Culture, identity and representation. Routledge.

The Short Stories of Shirley Jackson free essay sample

An examination of a number of short stories by Shirley Jackson, looking at the alternative themes she tends to portray in her stories. Shirley Jackson is a short story writer known for writing disturbing stories that focus not on horrific events, but on normal events that occur in society. The writer shows how her stories add new meaning to common events that everyone can relate to, often also making a comment on our society. Three of her stories which have these features, are examined The Witch, An Ordinary Day, With Peanuts, and After You, My Dear Alphonse. These stories are compared in terms of theme, style, irony, and characters. The common features of Jacksons work can easily be identified. In each of the three stories, the theme makes a comment on our society, using everyday events to accomplish this. In The Witch, a mother is on the train with her four-year old son. We will write a custom essay sample on The Short Stories of Shirley Jackson or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page A man enters and noting that the boy needs entertaining, tells him a story. The story, however, is a horrific one and what would be considered an inappropriate one. The mother must then deal with the social situation of reacting to the mans inappropriateness. The aspect of the story that communicates the theme is that the boy is actually entertained by the story, even though it is considered inappropriate. This leads the reader to consider why these types of stories are so entertaining and why the mother is more disturbed by the story than her son. This leads to the questioning of the conventions of society, especially the idea of what is considered inappropriate.