Article on global warming for 10
class global warming
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Answer:
This biggest environmental problem of “Global Warming” has not come all of sudden; but various objectionable acts of human kind since many years has led this problem arise in front of us. Increased temperature of earth surface is the biggest cause of Global Warming.
As we all know, trees are the absorber of Carbon Dioxide and producer of Oxygen. Population is increasing day by day and to fulfill the demand of accommodation people are forced to cut trees and due to this reason, fewer trees are left on earth. The presence of Carbon Dioxide in atmosphere is increasing which is a house green gas and major trapper of sun heat. Thus it increases the earth surface temperature and causes the situation of Global Warming. Many green house gases like Sulphur Dioxide, Methane and Nitrous Oxide are also the absorber of heat and their presence in atmosphere is because of burning of coal and fossil fuels; also due to anaerobic decomposition of organic materials.
Due to Global Warming, various disaster results may come in front of us like increased sea level due to melting of polar ice caps, situation of Tsunami, Cyclones, Flood or Drought. Already we are facing some of these problems in current time in form of increased summer weather, uncertainty of rainy season, floods near coastal areas or occurrence of earthquake and storms in various countries.
Solution for this major issue is to plant more trees as possible to reduce the quantity of Carbon Dioxide in atmosphere, try to avoid vehicles which produce green house gases by burning of fossil fuels. Polythene should be completely banned as they are made up of non renewal fossil fuels based resources which produce high level green house gases.
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Answer:
Global warming is the long-term rise in the average temperature of the Earth's climate system. It is a major aspect of current climate change, and has been demonstrated by direct temperature measurements and by measurements of various effects of the warming. The term commonly refers to the mainly human-caused increase in global surface temperatures and its projected continuation. In this context, the terms global warming and climate change are often used interchangeably, but climate change includes both global warming and its effects, such as changes in precipitation and impacts that differ by region. There were prehistoric periods of global warming, but observed changes since the mid-20th century have been much greater than those seen in previous records covering decades to thousands of years.
The Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report concluded, "It is extremely likely that human influence has been the dominant cause of the observed warming since the mid-20th century." The largest human influence has been the emission of greenhouse gases such as carbon dioxide, methane, and nitrous oxide. Climate model projections summarized in the report indicated that during the 21st century the global surface temperature is likely to rise a further 0.3 to 1.7 °C (0.5 to 3.1 °F) in a moderate scenario, or as much as 2.6 to 4.8 °C (4.7 to 8.6 °F) in an extreme scenario, depending on the rate of future greenhouse gas emissions and on climate feedback effects. These findings have been recognized by the national science academies of the major industrialized nations and are not disputed by any scientific body of national or international standing.
The effects of global warming include rising sea levels, regional changes in precipitation, more frequent extreme weather events such as heat waves, and expansion of deserts. Surface temperature increases are greatest in the Arctic, which has contributed to the retreat of glaciers, permafrost, and sea ice. Overall, higher temperatures bring more rain and snowfall, but for some regions droughts and wildfires increase instead. Climate change threatens to diminish crop yields, harming food security, and rising sea levels may flood coastal infrastructure and force the abandonment of many coastal cities. Environmental impacts include the extinction or relocation of many species as their ecosystems change, most immediately the environments of coral reefs, mountains, and the Arctic. Because the climate system has a large "inertia" and greenhouse gases persist in the atmosphere, climatic changes and their effects will continue for many centuries even if greenhouse gas emissions are stopped.
Possible societal responses to global warming include mitigation by emissions reduction, adaptation to its effects, and maybe climate engineering. Countries work together on climate change under the umbrella of the United Nations Framework Convention on Climate Change (UNFCCC), which has near-universal membership. The ultimate goal of the convention is to prevent dangerous anthropogenic climate change. Although the parties to the UNFCCC have agreed that deep cuts in emissions are required and that global warming should be limited to well below 2 °C (3.6 °F) in the Paris Agreement, the Earth's average surface temperature has already increased by about half this threshold. and current pledges by countries to cut emissions are inadequate to limit future warming. Some scientists question the feasibility, in higher emissions scenarios, of climate adaptation.
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