CAUSE AND EFFECT ESSAY

THE FUTURE PANDEMIC AVIAN INFLUEZA (H5N1)

Nowadays the Avian Influenza (H5N1) is a virus that worries to the world. The Avian Influenza and their serious repercussions, as the occurrence of human influenza A (H5N1) in Southeast Asia has paralleled large outbreaks of avian influenza A (H5N1), although the avian epidemics in 2004 and 2005 have only rarely led to disease in humans. It is for the above-mentioned that scientific international community to study it and to control it, because, they affirm, it puts in risk the humanity’s future. Although International Organisms in all the countries are you trying of prevent and to eliminate the possible infection focuses.

One of the effects of Avian Influenza (H5N1) that causes greatest concern on a global is the the easy propagation the virus, because it circulate from all over the world among the birds, It is very contagious among the birds and it can be mortal for them, especially for domesticated birds as the chickens. Besides the infected birds loose the virus in the saliva, the nasal secretions and the excrements, it for this reason that the scientific believed that most of the cases of infection of the H5N1 in humans have been caused by the contact with infected corral birds or with polluted surfaces. The second effect is the economic consequences that can be especially serious in countries in development where the increase of the corral birds supposes an important source of revenues and of foods for the impoverished rural farmers and their families.

On the other hand, the AVIAN INFLUEZA (H5N1) is having a significant effect on the situation faced by individual countries which is characterized by both urgency and uncertainty. Warnings that a pandemic may occur have come from both changes in the epidemiology of the disease in human and animal populations and the expanding geographical spread of the virus that creates ever-widening opportunities for human exposure. Neither the timing nor the severity of the next pandemic can be predicted but with the virus now endemic in bird populations the risk will not be easily diminished.

All in all, even though the problem of Avian Influeza (H5N1) may seem impossible to eliminate, but if the world maintains their project of create a vaccine, this will reduce the great number of deaths in the world and contributing this way to the salvation of the planet, avoiding a pandemic and eliminate its lethal effects
.

CAUSE AND EFFECT ESSAY

The Global Warming, “the problem of the future”

Nowadays the global warming is a phenomenon worries to the world. The global warming and their direct effect, the climatic change is a topic that occupies good part of the efforts of the scientific international community to study it and to control it, because, they affirm, it puts in risk the humanity's future. Although International Organisms in all the countries are trying of minimizing the effects of the global warming by means of laws and incentives for the industries.
One of the effects of global warming that causes greatest concern on a global is the change climatic, that in the last years it has been evident. The increase of the temperature of the Earth is due to the use of fossil fuels and to other industrial processes that take to an accumulation of gases hothouse (dioxide of carbon, methane, nitrous oxide and chlorfluorocarbons) in the atmosphere. Also, this increment in the levels of dioxide of carbon at the moment this provoking the increase of the global temperature, what originates climatic important changes with serious implications for the agricultural productivity. The second effect is on the changes in the planet as changes in the sea level, decrease of the covered with ice and snow and increase of the half temperature of the oceans, which produce floods, forest fires, other disasters.
On the other hand, the Global warming is having a significant effect on hundreds of plant and animal species around the world, although the most dramatic effects may not be felt for decades, according to a new study in the journal Nature. For example the birds are laying eggs earlier than usual, plants are flowering earlier and mammals are breaking hibernation sooner. Clearly, if such ecological changes are now being detected when the globe has warmed by an estimated average of only 1 degree F (0.6 C) over the past 100 years, then many more far-reaching effects on species and ecosystems will probably occur by 2100, when temperatures could increase as much as 11 F (6 ºC).
All in All, even though the problem of global warming may seem impossible to eliminate, but If the industrialized nations maintain their project of prohibiting the use of all the CFCs, it is expected that the atmospheric levels arrive to their maximum point around century end and disappear completely in eighty years, contributing this way to the salvation of the planet. and the effect of reducing its effects

CAUSE AND EFFECT ESSAY

EFFECTS OF WATCHING TOO MUCH TV

Discoveries and invention of devices are always welcome till we, humans, find a way to abuse its benefits and be adversely affected by it. This was the case when Wilhelm Roentgen discovered x-ray and within five years, the British Army was using a mobile x-ray unit to locate bullets and shrapnel in wounded soldiers in the Sudan. TV was also invented with positive thoughts in mind – there would be no national borders, education and communication would be worldwide, etc. However, we are now trying to overcome its physiological and psychological adverse effects on human beings.

One of the physiological effects of watching TV in excessive amounts is eye-strain. It is true that there are specifications for watching TV; TV should be 5 m. away from the eye, the room should be adequately lit, TV should be placed at the same height with our eyes, etc. However, these do not prevent our eyes from getting tired if we keep watching TV for a long time. Another effect is obesity, which is widely observed in people who like watching TV and eating snacks everyday (there is even a term “TV snacks” to refer to fast food that is suitable for eating in front of the TV). TV is such a powerful machine that people cannot get away from it – it is addictive.

Apart from the physiological effects, TV also causes psychological effects. One is a result of being exposed to violence. After seeing so many violent scenes on TV, people start considering violent actions normal and they lose their sensitivity to their environment. Partly connected to this effect, the interpersonal communication among people decreases. Being insensitive to the suffering of other people causes people to become alienated. Also, after coming home from work people seek to relax in front of the TV, and generally people prefer watching TV to talking to each other. This issue is very important since lack of interpersonal relationships mostly end with divorces.

Shortly, inventions are meant to be beneficial for human beings, if we know how to benefit from them. TV is one of such inventions that need to be used for the right purpose only – being educated and entertained for a reasonable (according to age) period of time. We may, then, be safe from or at least reduce the adverse physiological and psychological effects of watching too much TV.