File Name: essay on greenhouse effect and global warming .zip
The major greenhouse gases emitted by the United States as a result of human activity, and their percentage share of total U. There are other greenhouse gases that are not counted in United States or international greenhouse gas inventories:. This greenhouse effect traps radiation from the sun and warms the planet's surface.
Global climate change is now widely recognised as one of the foremost — perhaps the foremost — environmental challenge of the 21 st century. The evidence for human influence on climate change through emissions of greenhouse gases mainly carbon dioxide from fossil fuel burning, and methane from various sources , is now very strong. Climate change has importance for health in two main ways. First, some degree of climate change now appears inevitable, which means it is necessary to learn to adapt to climate change and to consider how to protect the population against its adverse effects. At the same time, major changes are needed in all sections of the economy to try to reduce human influence on climate change through reduction of greenhouse gas emissions mitigation. This implies substantial changes in energy use, transportation and in other sectors, which themselves are likely to have effects on health, for example through reduction of toxic air pollutants if dependence on the burning of fossil fuels is reduced.
Information Plus Reference Series. Opposing Viewpoints in Context, link. Retrieved November 21, , from…. Indigenous health. Reidpath, D. Measuring global health inequalities, International Journal for Equity in Health, 6 16 doi:
Natural processes include changes in the Earth's orbit of the sun which causes changes in the sun's intensity, plate tectonics changing the position and size of the continents and volcanic activity changing carbon emissions. Since the early 20th century human activities have significantly changed the composition of the Earth's atmosphere due to the emission of greenhouse gasses. These human activities include the burning of fossil fuels such as coal, oil, gas and peat in factories, the carbon emissions from car exhausts, methane and nitrous oxide emissions from agriculture and the change of how land is being used for example deforestation and urbanisation. Credit: NASA. Burning fossil fuels produces huge quantities of carbon dioxide CO 2 which is a greenhouse gas.
Of those gases, known as greenhouse gases , water vapour has the largest effect. The origins of the term greenhouse effect are unclear. Fourier, however, neither used the term greenhouse effect nor credited atmospheric gases with keeping Earth warm. This radiation, unlike visible light, tends to be absorbed by the greenhouse gases in the atmosphere, raising its temperature. Despite its name, the greenhouse effect is different from the warming in a greenhouse , where panes of glass transmit visible sunlight but hold heat inside the building by trapping warmed air. Although the greenhouse effect is a naturally occurring phenomenon, it is possible that the effect could be intensified by the emission of greenhouse gases into the atmosphere as the result of human activity.
Climate change mitigation consists of actions to limit global warming and its related effects. This involves reductions in human emissions of greenhouse gases GHGs as well as activities that reduce their concentrations in the atmosphere. Due to massive price drops, wind power and solar photovoltaics PV are increasingly out-competing oil, gas and coal  though these require energy storage and improved electrical grids. Once that low-emission energy is deployed at large scale, transport and heating can shift to these mostly electric sources. Mitigation of climate change may also be achieved by changes in agriculture , reforestation and forest preservation and improved waste management.
Global Warming and the Greenhouse Effect. The trapping and emission of radiation by the greenhouse gases present in the atmosphere is known as the.
Greenhouse gases from human activities are the most significant driver of observed climate change since the mid th century. As greenhouse gas emissions from human activities increase, they build up in the atmosphere and warm the climate, leading to many other changes around the world—in the atmosphere, on land, and in the oceans. The indicators in other chapters of this report illustrate many of these changes.
Human action is causing an increase in global temperature. For that reason, the greenhouse effect, far from being our great ally as was the case in the past, is now a risk to our survival. The flooding of coastal cities, the desertification of fertile areas, the melting of glacial masses and the proliferation of devastating hurricanes are just some of the main consequences. Global warming is having a profound impact on the processes of soil degradation and is contributing to the desertification of the most arid areas on the planet.
Сьюзан тихо вскрикнула: по-видимому, отключение электричества стерло электронный код. Она опять оказалась в ловушке. Внезапно сзади ее обхватили и крепко сжали чьи-то руки.
Открыв ее, она увидела несколько дополнительных папок; создавалось впечатление, что у Хейла было множество почтовых адресов. Один из них, к ее удивлению, был адресом анонимного провайдера. Сьюзан открыла одно из старых входящих сообщений, и у нее тотчас же перехватило дыхание. ТО: NDAKOTAARA.
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Keywords: Global warming, greenhouse effect, greenhouse gas, climate models, climate change, chlorofluorocarbons, nitrous oxide, carbon dioxide, ozone.Reply
In the nature of the case, then, no essay about the greenhouse effect can provide can be seen as harbingers of global warming (Kerr, ).Reply