a.k.m.a.l.a.z.h.a.r

According to Smith (2005), junk food is defined as any food that is unhealthy and gives no nutrition from its consumption. Junk foods such as cookies, chips and soft drinks contain low nutritional value (Health Foundation 2005). Therefore, junk food is being blamed for the rise of children’s health problems (Smith 2005). Childhood obesity which can lead to future health problems to children is reaching epidemic (Tran 2005). Thus, I strongly believe that the sale of junk food in schools should be banned because it has caused a lot of problems.

Firstly, the sale of junk food should be banned because it is the main contributor that leads to health problems among children. Junk food that contains high in fat, salts and sugar is usually contributes to obesity among children (Tran 2005). From Australian Nutrition Journal (2004), children consume sugar more than recommended intake. In future, it will leads to more serious health problems such as heart diseases, osteoarthritis and cancer (Tran 2005). Furthermore, the decline of dental health among children also is caused from junk food consumption especially soft drinks (Tran 2005).

Moreover, junk food packaging also contributes to the litter problems in schools. Cans, crisp packets and plastic containers from junk food are not treated well and caused inconvenience surrounding in schools. As a result, school have to spend more time and cash to overcome this problem. Schools that have decline the sale of junk food in their canteen can reduce the litter problem (Smith 2005). Thus, the schools grounds man can spend more time on maintaining the school’s project rather than cleaning the grounds (The Food Show 2005).

In addition, chemical addictives are added into junk food to fuel up the taste and color (Smith 2005). However, these addictives cause children to be hyperactive and poor concentration during class. Thus, their learning potential is decreased (The Food Show 2005). Children cannot get the sufficient nutrients they need for growth and healthy development if they eat too much of junk food (The Food Show 2005). Thus, reducing the sale of fast food in schools can improve their character and health (The Food Show 2005).

As conclusion, I strongly agree that the sale of junk food in schools canteen should be banned because of above reasons. However, it is compulsory to educate parents about healthy eating habit at home (The Food Show 2005). Parents spend most of the time with their children at home, and they can take the chance to educate their children about healthy eating habit. Although the school can plays their roles to reduce the sale of fast food, but however it is not the solution to the children health problems.

Our Earth is getting warmer over the past few decades. Human have been artificially increasing the concentration of greenhouse gases in the atmosphere (Riebeek, 2007). Human activities such as the burning of fossil fuels like coal, natural gas and oil give out greater amount of carbon dioxide into the air. As a result, the Earth is getting warmer as the atmosphere traps more sunlight (Woodford, 2006). Hence, global warming can bring some negative effects in term of climate change and vital actions should be taken in order to save the Earth.

Firstly, the effect of global warming to the Earth is the climate change. The releasing billions of tons of greenhouse gases into the atmosphere had caused temperatures of the planet to increase (Riebeek, 2007). In the film An Inconvenient Truth (2007), Al Gore stated that the concentration of carbon dioxide in atmosphere now is above 300 parts per million. Temperature of Earth increases as the atmosphere traps more heat. It significantly changes the usual climate across the globe. For some places, global warming leads to more hot days and less cool days with the greatest warming on the land (Riebeek, 2007).

Another consequence of global warming is the sea-level increase due to the melting of ice. Sea ice in the North Pole and South Pole are warming tremendously (Woodford, 2006). An area of ice the size of Norway, Sweden, and Denmark is disappeared in the Arctic. According to An Inconvenient Truth (2007), the amount and the thickness of the Arctic’s ice cap is decreasing 40% in 40 years. Thus, due to the increasing of sea-level, people who live near the sea-level need to consider their home might be disappear underwater. In future, scientists believe that sea-level will continuously rise from 10 cm to 1 meter (Woodford, 2006).

Other than that, global warming also causes some problems to human especially the poorest people. People from the poor countries do not have sufficient resources to keep away themselves from climate changes (Riebeek, 2007). Moreover, global warming is predicted as one of the factors that caused the faster spreading of pests and diseases. For instance, Mosquitoes breed faster in higher temperature, spreading diseases to more people (Woodford, 2006). It is believes that the number of new diseases will rise as the Earth is getting warmer. In addition, 30 news diseases are founded in the last quarter of century (An Inconvenient Truth, 2007).

A final problem caused by global warming is that many species are now threatened with extinction and the ecosystem is disturbed. With the faster increasing change of temperature, animals and plants may not be able to adapt quickly enough and many of the species become extinct (Woodford, 2006). In order to survive, both plants and animals have started to migrate towards the poles, however, it is believes that most of these species face extinction because they cannot adapt to the new surrounding (Riebeek, 2007).For example, polar bears depend on sea ice to hunt and move from one place to another. If all the sea ice is melts, it is afraid that the polar bears may not be able to survive.

According to An Inconvenient Truth (2007), Al Gore suggested that global warming can be reduced if we are able to produce fewer carbon dioxide emissions. We can use energy-saving fluorescent lamps instead of incandescent lamps. Walk or ride a bicycle instead of using car is the easier way to practice, significantly reduce the emission of carbon dioxide to the air (Woodford, 2006). We also can buy energy efficient appliances and stop using air conditioner that releases harmful gases to the atmosphere.

Global warming causes havoc across the globe. The sea-level is increasing and the globe’s climate is significantly changes. The ecosystem is unbalance, plant and animal are believe to face extinction if global warming worsen. The most tragic effect from global warming is to the human itself. Because of greenhouse gases are long-lived, our Earth will continue to warm. However, our decisions control the degree of changes of global warming (Riebeek, 2007). As conclusion, Al-Gore (2007) has mentioned that ‘the solutions are in our hands, we just have to have the determination to make it happen’.