The assessment of social mobility essays

The assessment of social mobility essays Are the 35 million Americans who fall below the poverty line there because they are lazy and have let all opportunities for social advancement pass them by? Or is there currently a social structure that successfully reproduces classes and limits upward social mobility in America? Certain institutions in American society, including education, work and occupational structure and the family help perpetuate social class stratification. These institutions widen the gap between the rich and the poor by placing inherent restrictions on opportunities for those born into different classes. Although the degree of effort put forth by each individual is critically important, their relationship to the aforementioned institutions can severely limit upward social mobility. The current educational system creates a unique contradiction. While traditionally the best way to climb the ladders of society, American schools are now reproducing social classes. Those children born into poor families and neighborhoods usually begin their school career at a steep disadvantage. Public schools that are run down and lack sufficient funding or other key resources like good teachers are endemic to these lower income areas. The idea of class reproduction, or the correspondence principle, is obviously present in education. As mentioned above, differences between schools and school districts exist. In his article on the inequalities of public education in New York, Kozol describes an elementary school in North Bronx where 63 children share an average sized classroom. The room has no windows, for the building used to be a roller-skating rink. Consisting of 90% black and Hispanics, the student body of 1,300 has only 26 computers. (Kozol, 95) On the other hand, educational standards in upper-middle class communities are far superior. Here in Grand Blanc, Michigan an average second grade class would have one teacher for under thirty students and more than one computer i...

Habits and Traits of Mites and Ticks

Habits and Traits of Mites and Ticks Not much love is lost on the mites and ticks of this world. Most people know little about them, other than the fact that some transmit diseases. The order name, Acari, derives from the Greek word Akari, meaning a small thing. They may be small, but mites and ticks have a big impact on our world. Characteristics Many mites and ticks are ectoparasites of other organisms, while some prey on other arthropods. Still, others feed on plants or decomposed organic matter like leaf litter. There are even gall-making mites. Take just a scoop of forest soil and examine it under a microscope, and you may find several hundred species of mites. Some are vectors of bacteria or other disease-causing organisms, making them a significant public health concern. Members of the order Acari are diverse, abundant, and sometimes economically important, though we know relatively little about them. Most mites and ticks have oval-shaped bodies, with two body regions (prosoma and opisthosoma) that may appear fused together. The Acari are indeed small, many measuring a mere millimeter long, even as adults. Ticks and mites go through four life cycle stages: egg, larva, nymph, and adult. Like all arachnids, they have 8 legs at maturity, but in the larval stage, most have just 6 legs. These tiny organisms often disperse by hitching rides on other, more mobile animals, a behavior known as phoresy. Habitat and Distribution Mites and ticks live just about everywhere on Earth, in both terrestrial and aquatic habitats. They live virtually everywhere that other animals live, including in nests and burrows, and are abundant in soil and leaf litter. Though over 48,000 species of mites and ticks have been described, the actual number of species in the order Acari may be many times that. Well over 5,000 species inhabit the U.S. and Canada alone. Groups and Suborders The order Acari is somewhat unusual, in that it is subdivided first into groups, and then again into suborders. Group Opilioacariformes - These mites look somewhat like small harvestmen in form, with long legs and leathery bodies. They live under debris or rocks and may be predaceous or omnivorous feeders. Group Parasitiformes - These are medium to large mites that lack abdominal segmentation. They breathe by virtue of paired ventrolateral spiracles. Most members of this group are parasitic. Suborders of the Parasitiformes:Suborder HolothryinaSuborder MesostigmataSuborder Ixodida - Ticks Group Acariformes - These small mites also lack abdominal segmentation. When spiracles are present, theyre located near the mouthparts. Suborders of the Acariformes:Suborder ProstigmataSuborder AstigmataSuborder Oribatida Sources Borror and DeLongs Introduction to the Study of Insects, 7th edition, by Charles A. Triplehorn and Norman F. Johnson.NWF Field Guide to Insects and Spiders of North America, by Arthur V. EvansLatin American Insects and Entomology, by Charles Leonard HogueIntroduction to the Acari, University of California Museum of Paleontology. Accessed February 26, 2013.Arachnida: Acari, class handouts from University of Minnesota Entomology Department. Accessed online February 26, 2013.Soil Arthropods, National Resources Conservation Service. Accessed February 26, 2013.