My Contribution To A Better Society Short Essay On Global Warming

Global warming

Introduction and meaning: The rise in earth’s surface temperature as a consequence of greenhouse effect is called Global Warming.

The greenhouse gases such as carbon-dioxide and other pollutants absorbs more heat from the sun then it radiates back. This causes an increase in the intensity of heat in atmosphere.

The thickening of earth atmosphere because of presence of increased carbon dioxide and other greenhouse gases is called greenhouse effect.

What causes Global Warming?

1. Deforestation and industrial emissions result to an increase greenhouse gases (such as carbon-dioxide) around earth’s atmosphere.

2. These greenhouse gases traps and absorbs atmospheric heat and ultimately causes Global warming (an increase earth’s surface temperature).

Effects / Impact of Global Warming

If Global warming continues the world would be in danger. The major effects and impacts of Global Warming are:

1. Climate Change: Global warming is causing climate change. The world’s is becoming warmer and warmer. There is also prediction of regional climate changes along the ecosystem.

2. Sea Level Change: One major consequence of global warming arising out of greenhouse effect is the rise in sea level. Four major changes take place prior to this. They are: Thermal expansion, mountain glacier melting, Greenland ice sheet melting and Polar (Arctic and Antarctic) ice sheet melting. Thus, the coastal cities and ports may be submerged under sea-water. Many islands may vanish from the earth surface as well as from the world map.

3. Water Balance: Although changes in sea-level have received much publicity, problems of water availability are likely to be more serious and perhaps more expensive to solve. In future, warmer world will face water crisis in some parts while in other regions it will be wetter than it is now.

There is uncertainty regarding regional forecasts of future precipitation as warming of globe makes it difficult to predict. Also, pattern of agricultural changes, or effects on ecosystems in general are fairly unpredictable.

4. Human Health: The human health is put at risk because of Global warming. In recent years, there have been newer reports of spread of major tropical diseases with changing climate. As the earth becomes warmer, more and more people are likely to be affected by tropical diseases.

How to prevent Global Warming?

The problem of Global Warming can be controlled by minimizing the emission of greenhouse gases into the environment. The following preventive steps would help save the earth from the harmful effects of Global Warming.

  1. Laws. The Laws that governs pollution and greenhouse gases should be followed.
  2. Reduction in thermal power generating stations. Reduced dependence on thermal power for our electricity need would help towards reducing the quantity if carbon dioxide in the environment. The use of fossil fuels for generating conventional energy is a major of greenhouse gases.
  3. We should not waste paper. We can save paper by keeping documents in electronic format and by not printing emails.
  4. Planting Trees. Trees absorb carbon dioxide and releases oxygen. Trees are helpful in reducing the problem of global warming.
  5. Sharing our car. We can share our car while going to office or performing other scheduled activities. On one hand, we will save money, and on the other, we will emit less greenhouse gases.

Category: Environment, Essays, Paragraphs and Articles

Just as the world's most respected scientific bodies have confirmed that world is getting hotter, they have also stated that there is strong evidence that humans are driving the warming. The 2005 joint statement from the national academies of Brazil, Canada, China, France, Germany, India, Italy, Japan, Russia, the UK and the US said:

"It is likely that most of the warming in recent decades can be attributed to human activities."

Countless more recent statements and reports from the world's leading scientific bodies have said the same thing. For example, a 2010 summary of climate science by the Royal Society stated that:

"There is strong evidence that the warming of the Earth over the last half-century has been caused largely by human activity, such as the burning of fossil fuels and changes in land use, including agriculture and deforestation."

The idea that humans could change the planet's climate may be counter-intuitive, but the basic science is well understood. Each year, human activity causes billions of tonnes of greenhouse gases to be released into the atmosphere. As scientists have known for decades, these gases capture heat that would otherwise escape to space – the equivalent of wrapping the planet in an invisible blanket.

Of course, the planet's climate has always been in flux thanks to "natural" factors such as changes in solar or volcanic activity, or cycles relating the Earth's orbit around the sun. According to the scientific literature, however, the warming recorded to date matches the pattern of warming we would expect from a build up of greenhouse gas in the atmosphere – not the warming we would expect from other possible causes.

Even if scientists did discover another plausible explanation for the warming observed to date, that would beg a difficult question. As Robert Henson puts it in The Rough Guide to Climate Change:

"If some newly discovered factor can account for the climate change then why aren't carbon dioxide and the other greenhouse gases producing the warming that basic physics tells us they should be?"

The only way to prove with 100% certainty that humans are responsible for global warming would be to run an experiment with two identical Earths – one with human influence and one without. That obviously isn't possible, and so most scientists are careful not to state human influence as an absolute certainty. Nonetheless, the evidence is now extremely strong.

We'll look at more specific questions about the links between greenhouse gases and global warming separately. Check back soon for those.

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• This answer last updated: 17.12.2010
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