The role of techonology Research Proposal Example | Topics and Well Written Essays - 1000 words

The role of techonology - Research Proposal Example Essentially, the greenhouse effect functions like this. When sunlight pierces the atmosphere and hits the earth’s surface, not all of the sun’s solar energy is absorbed. It is a delicate balance and because these greenhouse gases have been artificially increased by man-made technology, more build up in the atmosphere has occurred. This traps more of the sun’s energy inside our atmosphere and reflects less back in to space. This occurrence is causing the earth to warm. Carbon Dioxide (CO2) is the most common of the greenhouse gases. Although cutting down the rainforests is contributing heavily to the increase of CO2 in the atmosphere, a larger portion is caused by the burning of fossil fuels such as oil and coal to power our technology. Fossil fuels are burned by factories, vehicles and electricity-producing power plants to name a few sources. Most of this excessive fuel consumption and its poisonous, pollutant and greenhouse-enhancing byproducts are located in th e U.S., Europe and Russia (Breuer, 1980). It is estimated that man-made influences represent about half of the CO2 output in the world. The rising levels of carbon dioxide (CO2) in the atmosphere are becoming increasingly worrying. â€Å"The concentrations of CO2 in the air around 1860 before the effects of industrialization were felt, is assumed to have been about 290 parts per million (ppm). In the hundred years and more since then, the concentration has increased by about 10 percent† (Breuer, 1980, p. 67). Eighty percent of the world’s population accounts for just 35 percent of CO2 emissions. The United States and Soviet Union combined are responsible for generating half of the air pollution. Worldwide, â€Å"carbon dioxide emissions are increasing by four percent a year.† (Miller, 1990, p. 450). The scientific community agrees that global temperatures are rising due

Second language teaching Essay Example | Topics and Well Written Essays - 500 words

Second language teaching - Essay Example This infant stage is the appropriate period for a child, when cognitive and linguistic development can be observed among the children. Regarding this cognitive and linguistic level, it is identified that certain percentage of people witnesses this development very quickly during the early growth phase of a child. In addition, few numbers of children also experience cognitive and linguistic development certainly after the expected age. In this context, Gopnik and Meltzoff (p. 1523) argued that certain numbers of infants improve their cognitive and linguistic ability within nine or ten months after the birth, whereas few children experience their cognitive and linguistic development after little delay in time. During the 24th months after born or may even more than that period of time, children are identified to manipulate things in different categories such as boxes and boxes among others along with surrounding, which is the beginning of their learning. Additionally, interactions with children during the infancy is ascertained as an important consideration based on which children are able to develop their cognitive as well as linguistic skills (Anderson, Rasmussen and Strà ¸mme 2-9; Gopnik and Meltzoff 1523). Metalinguistic awareness signifies the ability through which children develop their language during the infant stage. In this regard, Anderson, Rasmussen and Stromme (pp. 2-9) argued that children are developing their linguistic knowledge and languages from its surroundings.