Chris+Freeman

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 * //What is global warming?//**
 * //Global warming is the rise in temperature but it//** **//refers to the increase in the average temperature of the Earth's near-surface air and oceans in recent decades and its projected continuation.//**
 * //What cause global warming?//**
 * //The Earth's climate changes in the response to external forcing including variations. In its orbit around the sun, volcanic eruptions, and atmospheric greenhouse gas concentrations. The detailed causes the recent warming, but the scientific consensus identifies elevated levels of the greenhouse gases due to human activity as the main influence. This attribution is the clearest for the most recent 50 years, for which the most detailed data are available. In contrast to the scientific consensus that recent warming is mainly attributable to elevated levels of greenhouse gases, the other hypotheses have been suggested to explain the observed increase in mean global temperature. None of the effects of forcing are instantaneous. The thermal inertia of the Earth's oceans is slow responses of other indirect effects that are mean that the Earth's current climate is not in equilibrium with the forcing imposed. Climate commitment studies indicate that even if the greenhouse gases were stabilized at the level of 2000, a further warming of about 0.5 °C (0.9 °F) would still occur with in the atmosphere.//**
 * //What Are The Effects of Global Warming?//**
 * //While many view the effects of global warming to be more substantial and more rapidly occurring than others do, the scientific consensus on climatic changes related to global warming is that the average temperature of the Earth has risen between 0.4 and 0.8 °C over the past 100 years. The increased volumes of carbon dioxide and other greenhouse gases released by the burning of fossil fuels, land clearing, agriculture, and other human activities, are believed to be the primary sources of the global warming that has occurred over the past 50 years.//**