Caecilians, the Snake-Like Amphibians

Caecilians are an obscure family of slender-bodied, limbless amphibians that—at first glance—resemble snakes, eels and even earthworms. Their closest cousins, however, are better-known amphibians like frogs, toads, newts, and salamanders. Like all amphibians, caecilians  have primitive lungs that enable them to take in oxygen from the surrounding air, but crucially, these vertebrates also need to absorb additional oxygen through their moist skin. (Two species of caecilians lack lungs entirely, and thus are completely dependent on osmotic respiration.) Some species of caecilians are aquatic and have slender fins running along their backs that enable them to move through water efficiently. Other species are primarily terrestrial and spend much of their time burrowing underground and hunting for insects, worms and other invertebrates using their acute sense of smell. (Since caecilians need to stay moist to stay alive, they not only look but also behave much like earthworms, rarely showing their face to the world unless theyve been uprooted by a spade or a careless foot). Because they mostly live underground, modern caecilians have little use for a sense of sight, and many species have partially or entirely lost their vision. The skulls of these amphibians are pointed and consist of strong, fused bones—adaptations that enable caecilians to bore through mud and soil without doing any damage to themselves. Due to the ring-like folds, or annuli, that encircle their bodies, some caecilians have a very earthworm-like appearance, further confusing people who dont even know that caecilians exist in the first place! Oddly enough, caecilians are the only family of amphibians to reproduce via internal insemination. The male caecilian inserts a penis-like organ into the cloaca of the female and keeps it there for two or three hours. Most caecilians are viviparous--the females give birth to live young, rather than eggs--but one egg-laying species feeds its young by allowing the newborn hatchlings to harvest the outer layer of the mothers skin, which is well-stocked with fat and nutrients and replaces itself every three days. Caecilians are found primarily in the wet tropical regions of South America, Southeast Asia, and Central America. They are most widespread in South America, where they are especially populous in the dense jungles of eastern Brazil and northern Argentina. Caecilian Classification Animalia Chordata Amphibian Caecilian Caecilians are divided into three groups:  beaked caecilians, fish caecilians, and common caecilians. There are about 200 caecilian species overall; some undoubtedly have yet to be identified, lurking in the interiors of impenetrable rain forests. Because they are small and easily degraded after death, caecilians are not well represented in the fossil record and consequently not much is known about the caecilians of the Mesozoic or Cenozoic eras. The earliest known fossil caecilian is Eocaecilia, a primitive vertebrate that lived during the Jurassic  period and (like many early snakes) was equipped with tiny, vestigial limbs.

The Use Of History Was Very Effective Because The Things...

Ta-Nehisi Coates use of history was very effective because the things teach us our background and also help us learn more about our history. Coates makes several references to racism, as he interviews Dr. Jones. She talks about her encounter with racism as a child. When she was growing up in Opelousas, Louisiana, there was still segregation going on. One day Mable Jones and her mother was traveling on the greyhound bus, when Dr. Jones sat in a seat near the front of the bus, â€Å"a few minutes later my mother was looking for me and she took me to the back of the bus.† Blacks were assigned to sit at the back of the bus, and if her mother had allowed her to continue sitting in the front, there would’ve been an issue. This was very powerful because we are no longer segregated and because of these altercations, they have paved the way for the future generations. Coates also make several mentions about slavery, he says, â€Å"Enslavement was not destined to end, and it is wrong to claim our present circumstances.† Slavery was never anticipated to end, even today we are either slaves to the policemen or the lives that were killed were moderates of slaves in the harsh world that we live in. There was a purpose for slavery and racism , so one must be aware and not have to live in fear because of these things. 2.) Did this book alter your understanding of racism as an issue in 21st- century life? If so, how? I believed this book altered my understanding of racism as an issue in theShow MoreRelatedThe Education of Children Essay1170 Words   |  5 PagesMichel Eyquem de Montaigne was born on February 28, 1533, into a time when only the wealthy received the privilege of a good education. 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Employee Diversity Assignment Free Essays

Employee Diversity Contents: 1. Introduction†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. We will write a custom essay sample on Employee Diversity Assignment or any similar topic only for you Order Now 2 2. Advantages of employee diversity to organization†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦2 1. Advantage of Language diversity†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦ †¦2-3 2. Advantage of Gender diversity†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.. 3 3. Advantage of Age diversity†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.. †¦Ã¢â‚¬ ¦3-4 3. The problem of employee diversity†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.. †¦4 1. Communication problem†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. 4-5 2. Gender discrimination problem†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. 5 4. Solutions to the problem of employee diversity†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.. 5-6 1. Solutions of communication†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. 6 2. Solutions of gender discrimination†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦ †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. 6 5. Conclusion†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.. †¦Ã¢â‚¬ ¦. 6-7 Reference†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. †¦8 1. Introduction: The employee diversity can be defined as the employment of people with different qualities and back grounds. The most fundamental of the definition of employee diversity are focus on race, gender, nationality, age. According to (Nancy R, June 2005), fast technological change, globalization, the demand for skills and education, an aging workforce and greater ethnic diversification in the labor market have greatly influenced the arrangement of diversity today. Today’s definition of employee diversity includes race, age, ethnicity, gender or personality and work style, secondary influence such as religion, socioeconomics and education. Nowadays, employee diversity is very population the work place. It has advantages also accompanied by the disadvantages. 2. Advantages of employee diversity to the organizations 2. 1. Advantage of Language diversity: In the organization if the employees are speaking different languages, it may bring some benefits to the organization. For example, in the one company if the staffs speak not only one language, when the company need some staff to go overseas to join some meetings or do some inspections and research. So the company can only pick up some staffs that can speak those countries’ languages and send them for the meetings or inspections instead of find out some translators or even spend money to hire some consultants. It really can save the expenditure for the company. Nowadays, if a company want to be succeed, it really need to be able to better integrate into this world and also need to broaden their horizons. The employees are the main force of the company; their performances are really affecting the company’s future. The employees’ language diversity can help the company to explore more overseas markets and make them more competitive. 2. 2. Advantage of Gender diversity Gender diversity also has its own advantages for organization. In an era, people change their ways of thinking the gender diversity in the work place. They realized that not only men can do every work in the work place. Now, women are becoming more and more important in organization. Nowadays women have the skill set for the new competitive demands of technical work. Companies agree that they need more technical leaders with varied skills such as interpersonal skills and business skills. 93% of technical leaders in a survey indentified the building of collaborative networks in an organization as a crucial component of leadership (White, B, 2006). Women have the skills to meet the new demands of technological work both in terms of technical and interpersonal skills (Tray, L, 2007). Of course interpersonal skills are really needed in the organization; it is very useful and helpful for running the organization. All those show that women are indeed more suitable for certain parts of organization. These are also the advantages of gender diversity. 2. 3. Advantage of Age diversity Age diversity has its own advantages in the workplace. Nowadays in the work place, there are many different age levels of workers. One part of them is old workers. More and more old workers in the work place are the current trend. Because now, people are retiring much later in life than before and their careers are extended in the present day. According to the research by United States Department of Labor shows that between 1977 and 2007 employment of workers 65 and over increased 101 percent, compared to a much smaller increase of 59 percent for total employment (16 and over). For those older workers they all worked long time in the work place, definitely they got more experience and knowledge than the young age workers. Those of them can transfer knowledge and experience to the new workers. It can help the organization save the expenditure for sending the new workers for training. And the old workers’ experience can help the new workers avoid some common mistakes. In the other hand, nowadays in the work place there are also many young age workers. They also can bring the benefits to the organization. Compare with older workers, younger workers are more creative and innovation. They can help the organization to make better decision and improve problem solving (Harvey, Carol P; M. June Allard, 2012). Nowadays, if the organization wants to remain competitive, it should encourage the staff to distribute a variety of ideas which leads to higher levels of innovation. This part of workers is really a new vitality of organization and they can help organization to keep up with the pace of the times. 3. The problems of employee diversity Consider the employee diversity in the work place. Besides the benefits, there are many problems come out as well. And all these problems may lead to loss for the organization. Below two problems are very common in the work place. 3. 1. Communication problem Communication barriers will lead to problems in the organization. For example, if a manager gives instructions about completing a task to a staff. But this staff fails to fully understanding the instructions because of the language barrier. And then the staff may make mistakes if he tries to complete the task without receiving clarify or even don’t know what the task it is. This problem will cause the delay of the task complete or even fail. It will really cause the losses for the company. And if during a team work, the staffs have communication problem. It will affect the efficiency of work and sometimes it will affect the relationships of the teammates. And also because of the employees may come from different countries, so they may have their own work styles and behaviors and those situations also can cause communication problems among the employees. And finally affect the organization’s benefit. 3. 2. Gender discrimination problem Gender discrimination is another very common phenomenon in the work place. According to the traditional thinking, women have been considered intellectually inferior to men and men are more capable than women at work. Thus, in the workplace, under the same conditions men will get more opportunity to be promoted than women. Same as in the management level, women’s suggestion and ideas sometimes will be ignored or unaccepted. Above phenomenon have also can led to the lack of teamwork and inefficiency work. And this is also a reason of pay-gap between male and female workers. Sometimes the gender discrimination even happened in the recruitment. During the interview men really get high chance to get the job than women. According to a survey conducted by the center for Women’s law and legal services of Peking University in 2009 (Women’s Law and Legal services, 2009). This survey researched 3,000 female employees over one year’s time and got the results by analyzing data interviewed some women employees. According to employers set different criteria in recruitment and women have to have excellent performance than their male competitors in interview to get the same job. More than 1/3 of those women said that male employees are easy to get promoted and priority is always given to male employees. This is fully illustrated gender discrimination really happened in the work place and it becomes a big problem in the workplace. . Solutions to the problem of employee diversity Regarding the problems of employee diversity in the work place, we need to get some solutions to avoid or solve them. In case of these problems damage the interests of organization. 4. 1. Solution to communication problem: ? Training: Employees could be provided proper training to receive in certain language courses if they have language barriers. They also need to be trained how to use the organization internally information system such as telephone system, e-mail system. Set a SOP for staff to check the work has been access properly: Communication problem always caused by misunderstanding and ambiguity and finally lead to loss for the organization. The organization leaders can set some SOPs for staff to make sure the work and information has been implemented properly. In the SOPs may include the instructions of work process and double check procedures. 2. Solutions of gender discrimination: ? Set the relevant regulation of gender discriminations: Make sure the employee handbook includes anti-gender discrimination policies. Create clear examples of gender discrimination to clarify any questions employees may have. And organize the staffs review and test regularly. ? Put reflected box in the work place: In the organization it can be set the reflected box in the work place to encourage and promote the staff to reflect any problems especially the gender discrimination. Once the phenomenon happened, the organization should resolve it quickly and given the appropriate punishment. 4. Conclusion The employee diversity is a reflection of a present trend of this times. Diverse work teams can bring high value and benefit to organizations. Respecting individual differences will benefit the work place by creating a competitive edge and increase work productivity. But work diversity also causes many problems and they also can lead to loss for the organization. Therefore, we need correct to face and deal with the employee diversity. Words:1486 Reference †¢ Eisenberg, Eric M. ; H. L. Goodall, Jr. Angela Trethewey (2010). Organizational Communication (6th ed. ). St. Martin’s: Bedford. pp. 250–58 †¢ Harvey. Carol P; M. June Allard. Understanding and Managing Diversity(5th ed) Boston: Person. Harvey, Carol P. (2012). Understanding and Managing Diversity. New Jersey: Pearson Education, Inc.. pp. 51–55. ISBN 0-13-255311-2 †¢ Nancy R, June 2005 , Retrieved 19 May, 2012 (http:web. ebscohost. com. ezproxy. utas. edu. ) †¢ Tay, L. IT goes soft for career oriented women. Computer World, 2007 P18-21 †¢ United States Department of Labor , July 2008, Retrieved 19 May, 2012 (http:www. dol. gov/spotlight/index. html), †¢ White, B, Leading Technical Professionals 2006, P21-22, †¢ Women’s Law and Legal Services (2009, April 16) Workers’ Daily, P. A5,A6 How to cite Employee Diversity Assignment, Essay examples