Apr 01, · Here are some species that have all gone extinct in the past two centuries. The Quagga (Equus quagga ssp. quagga) was a subspecies of the common plains zebra and a native of South Africa. Known for its unique stripes, the Quagga was hunted for its hide and killed by ranchers who believed the animals competed with livestock for grazing blogger.comted Reading Time: 7 mins Since about species have became extinct. The rapid disappearance of species was ranked as one of the planet's gravest environmental worries, surpassing pollution, global warming and the thinning of the ozone layer, according to the survey of scientists commissioned by New York's American Museum of Natural History.. Since the s, worldwide commercial Today some species of birds and of mammals are facing serious threats of extinction (Myers, ). One of the most interesting and curious of the carnivorous marsupials, viz., Thylacinus cynocephalus or the “Tasmanian Tiger” is now believed to be blogger.comted Reading Time: 8 mins
Animal Extinction Essay - Animals Are On The Verge Of Extinction
Tropical forests include essay on extinction of species rainforests, where rainfall is abundant year-round; seasonally moist forests, where rainfall is abundant, but seasonal; and drier, more open woodlands. Tropical forests of all varieties are disappearing rapidly as humans clear the natural landscape for construction, to build roads and urban areas and make room farms and pastures Lindsey, Although deforestation meets some of the human needs, it also has profound, sometimes devastating, consequences, including extinction of flora and fauna, social conflict, and climate change, challenges that are not just local, but global.
Jungle burned for agriculture in southern Mexico. By Jami Dwyer via Wikimedia Commons. Deforestation has many negative effects on the environment. The most dramatic impact is a loss of habitat for millions of species. The forests are the home to a large number of animals; trees are also an important component of the water cycle Bose, The roots of trees hold the soil together and prevent soil erosion. Deforestation at such alarming rate has been a cause of constant worries for environmentalists the world over Bose, In some developing countries, massive deforestation is on-going and shaping climate and geography Science daily, Deforestation may lead to a lot of causes, ranging from slow forest degradation to sudden and catastrophic wildfires.
Deforestation results from removal of trees without sufficient reforestation; however, even with reforestation, significant biodiversity loss may occur Moreover, deforestation also alters the hydrologic cycle, the moisture in the atmosphere and the amount of water in the essay on extinction of species and groundwater Science daily, Deforestation in indigenous territories by loggers, colonizers, and refugees has sometimes triggered violent conflict Lindsey, Forest preservation can be socially divisive, as well.
International and national governments and aid agencies struggle with questions about what level of human presence, if any, is compatible with conservation goals in tropical forests, how to balance the needs of indigenous peoples with expanding rural populations and national economic development, essay on extinction of species, and whether establishing large, pristine, uninhabited protected areas—even if that means removing current residents—should be the highest priority of conservation efforts in tropical forests Lindsey, There are a few reasons which cause deforestation; one of the biggest drivers of deforestation is conversion to cropland and pasture, mostly for subsistence, which is growing crops or raising livestock to meet daily needs.
Farmers cut forests to provide more spaces for grazing livestock and planting crops. The conversion to agricultural land usually results from multiple direct factors. For instance, countries build roads and railway expansion into remote areas to improve overland transportation of goods.
The road development itself causes a limited amount of deforestation Lindsey, The roads and the logged areas become a magnet for settlers, farmers and ranchers who slash and burn the remaining forest for cropland or cattle pasture, completing the deforestation chain that began with road building Lindsey, In other cases, forests that have been degraded by logging become fire-prone and are eventually deforested by repeated accidental fires from adjacent farms or pastures Lindsey, Wildfires and slash and burn agriculture release carbon dioxide that would otherwise be stored in the forest biomass into the atmosphere.
Forest regrowth and crops recapture some carbon, but overall, deforestation is a source of atmospheric carbon dioxide and therefore a contributor to global warming. When people clear the forests, usually with fire, carbon stored in the wood returns back essay on extinction of species the atmosphere, enhancing the greenhouse effect and global warming, essay on extinction of species.
Once the forest is cleared for crop or grazing land, the soils can become a large source of carbon emissions. In places such as Indonesia, the soils of swampy lowland forests are rich in partially decayed organic matter, known as peat Lindsey, During extended droughts, essay on extinction of species as during El Niño events large-scale ocean-atmosphere climate interaction linked to a periodic warming in sea surface temperatures across the central and east-central Equatorial PacificNational Ocean Service, the forests and the peat become flammable, essay on extinction of species, especially if they have been degraded by logging or accidental fire.
When they burn, they release huge volumes of carbon dioxide and other greenhouse gases Lindsey, It is not certain whether intact tropical forests are a net source or sink of carbon. Certainly, the trunks of trees are a large, stable pool of carbon that grows as forests mature or regenerate on previously cleared land. But trees, plants, and microorganisms in the soil also respire, releasing carbon dioxide as they break down carbohydrates for energy.
In the Amazon, essay on extinction of species, huge volumes of carbon dioxide escape from decaying leaves and other organic matter in rivers and streams that flood large areas of forest during the rainy season Lindsey, The variety and interdependence of all living things has led to the evolution of world.
Although in those times, hunting was the means for survival, human beings continued to kill animals even after they had learned to cultivate crops. The relentless hunting by human beings, sometimes for the hide of a cheetah or the tusks of the elephants, or simply to cook the tasty shark fin soup, has wiped out the existence of a large number of animals in just a century Bose, Besides hunting, human activities like deforestation and environmental pollution has led to the extinction of a large number essay on extinction of species animals and plants due to loss of their habitats.
However, there is a point when the resources are being overexploited, and this exploitation begins to threaten the existence of other species, essay on extinction of species.
Over exploitation presents itself in many forms: exhausting a species as a supply of food or hunting a species for trophies, clothing, medicine or souvenir. In the aquatic biomes, overfishing is a worldwide manifestation of over-exploitation Hogan, In the case of terrestrial ecosystems, overgrazing and intensive cropping systems are the chief elements of over-exploitation.
Hunting for trophy or medicinal extracts comprises smaller biomass destruction, but is specifically targeted at some of the most threatened fauna of the planet Hogan, These practices are generally overtly mercenary, rather than being motivated by subsistence or hunger, as most of the farming exploitation.
For example, tigers have been an integral part of traditional Chinese medicine for over years and essay on extinction of species such, they essay on extinction of species been hunted to the brink of extinction as a product of the lucrative trade in tiger body parts Hogan, Base on this picture, these are the modern biotic extracts store in Hong Kong, China.
Certain of these products represent trade in organisms that are endangered species. Pollution is the introduction of potentially harmful chemical or physical constituents into the environment, which substances substantially harm individual species metabolisms, or which strongly and rapidly alter a stable historic ecosystem composition Hogan, This introduction usually enters the atmosphere, soil or natural water systems of the Earth.
Widespread air pollutants are sulphur dioxide, carbon monoxide, and oxides of nitrogen. Water and soil pollutants of concern are heavy metals and a large category of pesticide and herbicide compounds Hogan, Chemical pollutants may interfere with metabolic functions, causing functional impairment or death of essay on extinction of species. Reductions in species numbers anywhere within a given food chain, of course, have ramifications to other members of the ecosystem Hogan, Pollution is often a contributing factor along with habitat degradation in extinction processes.
Here are some species that have all gone extinct in the past two centuries. The Quagga Equus quagga ssp. quagga was a subspecies of the common plains zebra and a native of Essay on extinction of species Africa. Known for its unique stripes, the Quagga was hunted for its hide and killed by ranchers who believed the animals competed with livestock for grazing area. The last known Quagga died at the Amsterdam Essay on extinction of species in Gerken, Known as Tasmanian tigers due to their stripes, thylacines Thylacinus cynocephalus were the largest modern carnivorous marsupial according to the Smithsonian Institution Gerken, They once existed across the Australian continent, but their habitat had been reduced to the island of Tasmania by the time European settlers arrived Gerken, Thylacines were believed to kill livestock and were often shot and trapped, essay on extinction of species.
They were a convenient scapegoat for poor financial returns and high stock losses at a time of rural depression in Tasmania according to the National Museum of Australia Gerken, The Tecopa pupfish Cyprinodon nevadensis calidae was native to the Mojave desert in California and could survive in waters as warm as degrees Fahrenheit Gerken, Human development around the Tecopa Hot Springs in the midth century and the channelling of two springs together left the habitat unsuitable for the small fish.
The Tecopa pupfish became extinct by or soon after Gerken, It is widely recognised that we are hugely overspending our current budget of natural resources. At the existing rates of exploitation, there is no way for the environment to recover in good time and save it for our future generation. Everything on our mother earth is interconnected, and while the nature supplies us with valuable environmental services. Without any of it, we cannot exist.
We should adopt a holistic view of nature. It is not an entity that exists separately from us; we are an inalienable part of nature and we should care for it in the most appropriate manner. This is the only way we possibly solve the problem of environmental pollution. The only key to save our beloved Mother Earth has been wandering with us from the very beginning.
It has been silently drifting, essay on extinction of species, waiting for someone to discover its dominating power. Close Menu SOLVED Consider the satellite attitude control system shown in the Figure a. The output of this system exhibits continued oscillations.
Purchase Confirmation. Purchase History. Transaction Failed. Free Turnitin Plagiarism Checker. Privacy Policy. Deforestation Tropical forests include dense rainforests, where rainfall is abundant year-round; seasonally moist forests, where rainfall is abundant, essay on extinction of species, but seasonal; and drier, more open woodlands.
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Extinction of Species - Evolution - Biology - FuseSchool
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Aug 14, · It is ironic that even though wild animals are way stronger than humans, they are facing a dark void of extinction due to human activities. Wild Animals are one of the most important elements in preserving a nation’s natural blogger.comted Reading Time: 3 mins Jun 05, · Newler argues that, “animals become extinct when they die and no longer exist; at that death of the only existing members of the species. Extinction simply means to be away forever”. The process takes place over a period of time. A species may be regarded to as functionally extinct before it is fully extinct when only a few of them exist Since about species have became extinct. The rapid disappearance of species was ranked as one of the planet's gravest environmental worries, surpassing pollution, global warming and the thinning of the ozone layer, according to the survey of scientists commissioned by New York's American Museum of Natural History.. Since the s, worldwide commercial
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