Sunday, February 17, 2019

Earth Faces a Sixth Mass Extinction Essay -- Exploratory Essays Resear

Earth Faces a Sixth Mass extermination Scientists in Great Britain suck in been canvass the distribution of birds, butterflies and plants for the past 40 years and the results from these studies suggest that the Earth is point towards another mass extinction, and this one may have its roots in human activity. Within the four billion years that Earth has been around, it has already experienced five mass extinctions. The most recent, and most well cognise occurred 65 million years ago and caused the extinction of the dinosaurs. While that my have been caused by a meteor colliding with the earth, if scientists be correct, our actions, both past and present, are harming many species of organisms and we may even be causing our own demise. The on-going studies in Great Britain covered the biodiversity (that is the amount of species of an organism within a given area) and the amount of land the plants, birds, and butterflies each occupied. It covered 1254 species of plants can vass from 1954 to 1960 and over again from 1987 to 1999, 201 bird species examine between 1968 and 1971 and again from 1988 to 1989, and 58 butterfly species studied between 1970 and 1982 and again between 1995 and 1999 (Thomas et al. 2004). Before this study there was single speculation into the possible population decline of insects. Since they are so teeming it had been hard to get any grasp on their actual pattern or the effect humans were having on them (Pennisi 2004). Over the epoch they were studied 3.4% of the species of butterflies went extinct compared to only .4% of the plant species. None of the species of birds that were studied went extinct during the time of the research. The extinctions that occurred were evenly spread throughout Great... ...xtinction just yet, a short occlusion of time from a geological point of view can be hundreds of thousands of years. ReferencesAnanthaswamy, Anil. Earth faces sixth mass extinction News Service. fra me in 18, 2004 http//www., Elizabeth. 2004 Naturalists Surveys Show That British Butterflies Are Going, Going ... Science v. 303, p. 1747Recer, Paul. Humans blamed for march toward 6th mass extinction Star Ledger Online. March 19, 2004 http//, Paul. UK wildlife heading into crisis BBC News Online. March 18, 2004 http//, J. A. et al., 2004 Comparative Losses of British Butterflies, Birds, and Plants and the Global Extinction Crisis Science v. 303, p. 1879

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