THE CONCEPT OF SPECIES What are species? Species are the basic taxonomic units of biological classification. This grouping of organisms of "like kind" into discrete and stable units has been traced at least from the time of Plato and Aristotle. The term derives from the Latin "specere" (to look at‚ to behold)‚ with the meaning of "kind‚“ "quality‚" "appearance‚" "shape‚" or "a peculiar sort.“ In the past‚ species were classified according to their shape. Carl Linnaeus (1707-1778)‚ the
Premium Evolution Gene Natural selection
Ring Species: A Catalyst for Speciation After spending time on the Galapagos Islands studying the origin of various species‚ former divinest Charles R. Darwin proposed the evolutionary theory of natural selection‚ a mechanism by which advantageous variations in a population are preserved while unfavorable variations are lost (Berkeley‚ 2008). As a result of these variations‚ some individuals are better acclimated to their environment than others. This results in the better-suited individuals outcompeting
Premium Evolution Species
relatively few species from many different classes of Ascomycota‚ whereas tropical endophyte assemblages are dominated by a small number of classes with a very large number of endophytic species. The most easily cultivated endophytes from tropical plants have wide host ranges‚ but communities are dominated by a large number of rare species whose host range is unclear. Even when only the most easily cultured species are considered‚ leaves of tropical trees represent hotspots of fungal species diversity
Premium Plant Forest Fungus
Chand Lin 1-Sec A06 17 May 2004 Cherokee: An Endangered Language In the United States‚ an emphasize in learning the dominant language‚ English for example‚ can inevitably put other languages within the country in extinction. In reality‚ there are many other spoken languages in the United Sates‚ like those spoken by Native Americans‚ that are becoming endangered because of the immensity of more used languages. One may ask‚ what is an endangered language? According to Michael Cahill (Bonvillain)
Premium Native Americans in the United States
A Culturally Endangered Youth. Introduction The combined forces of colonialism‚ westernization‚ and modernization have perfectly combined to drive Igbo culture to the margins of existence. What is dominant among the Igbo now is the payment of lip service to culture‚ especially by way of tourism and so-called inculturation. The people most affected are the young ones‚ mainly because the usual framework of learning by participation is no longer available to a greater percentage of them. Since the
Free Religion Culture Nigeria
Components of Argumentative essay and the use of language After deciding on your thesis and choosing your readings‚ you will now be ready to write you index cards by summarizing‚ paraphrasing and quoting (Portfolio item 3). Synthesizing (will be further explained in week 8) Your index cards will later be organized in a way to form the bigger picture. This is what we call ‘Synthesis’. It is the process of arranging the different pieces to create a mosaic and give it a personal meaning
Premium Argument map Television Objection
Origin of species; Critical Evaluation of Darwinian Theory Cristina Nava North Salinas High School Instructor: Mr. Zelensky Charles Darwin implied in his book‚ On the Origin of Species (1859)‚ a theory for evolution and its mechanisms. In his book Darwin intends to convey the reader that descent with modification and natural selection‚ part of the evolution theory‚ has occurred. He also writes about the “problem of purpose” idea and how evolution and natural selection solve
Free Charles Darwin Natural selection Evolution
The species richness is when we talk about the actual number of species in a community. For example‚ if you go to a bottom ground forest you might see only sugar maple. Therefore‚ the species richness is only 1. Shannon Index measures species diversity too‚ but takes into account species evenness. Species evenness is when the relative abundance of the species in that community are more similar to each other. So by knowing that you have more similar species‚ this allows you to more accurately determine
Premium Biodiversity Species Ecology
language. The impact of these rogue Englishes can be clearly seen in the language today‚ and some linguists even feel that American English is threatened by these countless variations. I disagree with this view of Standard American English as an “endangered” language‚ as a language somehow at risk of disappearing. Language plays far too large a role in power and perception‚ so much so that Standard American English will never truly face extinction. Immigrants are viewed by many as one of the fastest
Premium English language Dialect American English
When I first was handed the prompt for the Argument Essay‚ I had multiple conflicting thoughts. For one‚ I thought I was going to be able to easily complete this because I have proven in previous classes that I can formally argue a position. However‚ I have also learned that college and high school have different requirements in many ways. For example‚ for this assignment‚ we had were told to utilize the Toulmin method throughout the essay. Once I learned that I had to use the Toulmin method‚ I
Premium Writing Essay Writing process