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.
- Laws. The Laws that governs pollution and greenhouse gases should be followed.
- 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.
- We should not waste paper. We can save paper by keeping documents in electronic format and by not printing emails.
- Planting Trees. Trees absorb carbon dioxide and releases oxygen. Trees are helpful in reducing the problem of global warming.
- 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
Essay about Global Warming and Agriculture
1269 Words6 Pages
Global Warming and Agriculture
Global warming has been a major topic of environmental concern over the past several decades. The International Panel on Climate Change (IPCC) has recently predicted a 1 to 3.5 degree Celsius increase in average atmospheric temperature above 1990 levels by the year 2100. Although this temperature increase may seem small, even an increase or decrease of a few degrees in atmospheric temperature is capable of causing drastic alterations in the agricultural process, among many other everyday issues. Though many studies have been done on the probable effects of an increase in global mean temperature, much is still unknown or only guessed at, due to a general lack of deeper understanding of Earth?s very…show more content…
As America?s cultivated lands grow dryer and dryer, farmers will be forced to increase their usage of irrigation as a means of providing their crops with the proper growing environment. However, an expected increased general demand on water supplies due to the changing climate will make less water available to farmers for irrigation.
The mixture of crops and livestock grown and raised in a given region is influenced strongly by the area?s climatic conditions and the amount of water available. The warming of our climate will cause farmers to shift to crops and livestock now found in more southern locations. As the climate warms, farmers? flexibility in crop distribution is very much decreased.
Another possible effect of the climate shift we are currently experiencing is an expansion of the ranges of crop destroying pests. The increased vulnerability of crops to these pests could result in greater pesticide use. Other factors that may threaten agriculture in some areas are increased heat stress, more frequent flooding, and salinization of soils caused by rising of sea levels. One of Florida?s highest cash revenues comes from farming, with produce grown on irrigated croplands accounting for most of the income. However, the lack of a sufficient dormant period caused by increased