Introduction

What is Global warming?

Global warming is an increase in the earth's temperature due to fossil fuels, industry, and agricultural processes caused by human, natural, and other gas emissions. (Melissa Phillips). This results in an increased emission of greenhouse gases. Green house gas is very important for the weather.

What makes earth’s atmosphere warm?

Actually, Short-wave solar radiation sinks into the Earth's atmosphere and warms its surface; while long wave infrared radiation emitted by earth's surface is absorbed, and then re-emitted by trace gases. So this instance is very important to think on it.

What will effect if climate changes?

Climate changes occur in our earth's atmosphere due to a buildup of greenhouse gases. Greenhouse gases can occur naturally as well as a result of human activities.
Problems can occur when higher concentrations of greenhouse gases are present in our atmosphere because they have enhanced our earth's heat trapping capability. (Anne Rector).

What is the real fact about Globalwarming?

There are many misconceptions about global warming. Some believe that pollution causes global warming, but the fact is global warming is the result of burning fossil fuels, coal, and oil that release carbon dioxide. Another misconception is nuclear power causes climate change. Nuclear power actually reduces emissions of carbon dioxide when used in place of coal.... Read more

Factors affecting global warming

We are breating in polluted world and Global warming is not effected totally because of natural factors. There are different factors, both natural and human, that threaten this fragile balance:

Natural factors :

• Changes in Solar Output: the amount of energy radiating from the earth’s sun is not constant.
• Changes in the Earth’s Orbit: Slow variations in the Earth’s orbit around the sun change where and when energy is received on earth. This affects the amount of energy that is reflected and absorbed...Read more

Human factors :

• Enhancing the Greenhouse Effect: naturally occurring greenhouse gases, as described above, keep the Earth warm enough to support life. However, scientific studies have shown that a variety of human activities release greenhouse gases. These include the burning of fossil fuels for producing electrical energy, heating and transportation. By increasing their concentrations and by adding new greenhouse gases like CFCs, humankind is capable of raising the average global temperature...Read more

Is global warming was natural ?

With much stronger language and more assurance than in previous reports, the IPCC members said there was less than 10 percent chance that this global warming was natural -- they pinned it directly on human greenhouse gas emissions. The amount of CO2 spewed out per year from fossil fuel burning is 12 percent greater now than in the 1990s, their report indicated, and the amount of the greenhouse effect is the greatest in 10,000 years.

The forecast range of possible temperatures by the end of the century reaches higher in this report than did the previous one in 2001 --11.5 degrees F -- but the more probable range is between 3.2 and 7 degrees F. The rate of rise depends on if and how fast emissions are reduced and on possible adverse feedbacks in the climate system...Read more

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