Should the sale of junk food in school canteens be banned?
Junk food is defined as unhealthy food that has low nutritional value. According to Nutritional Value of the Most Popular Snack Foods from Health Foundation (2005), junk foods like chips, hamburgers, instant noodles and soft drinks are all having low nutritional value. As junk food contains chemical additives, it is tastier and has longer shelf life. Its cheap manufacture cost and easy storage have also increased its popularity (Smith 2005). I strongly believe that the sale of junk food in school canteens should be banned as junk food can lead to childhood obesity, bad behaviour and littering problems.
Firstly, junk food is to be blamed for the rising of childhood obesity. It has been shown that the foods eaten at home by 12-14 years old Australian children in 2003 have an increasing trend on fat and sugar intake instead of fresh fruit and vegetables (Australian Nutrition Journal 2004). This problem is made worse when the school canteens are offering junk food to the students, making junk food to be widely available. Junk food is high in fat and sugar and it can promote youth weight gain due to the rising of kilojoule intake. Childhood obesity can be further lead to heart disease, osteoarthritis and some cancers (Tran 2005).
Besides, junk food causes behavioural problems in children according to Smith (2005). This has been further elaborated by Cray (2005) that students who consume more junk food cannot get sufficient nutrients for their health development and growth. Thus, their learning potential is reduced. Students often take junk food as their lunch in school. Certain chemical additives in junk food can cause students to be hyperactive and have poor concentration. There is a noticeable improvement in students’ behaviour in class and they are becoming calmer after lunch when junk food and soft drinks are removed from the school canteen (Green 2005).
Furthermore, the sale of junk food in school canteens can also lead to littering problems. Fast food often comes with plastic packaging and students will just dispose the packaging anywhere after eating the food. There are also empty soft drink cans everywhere. The cleaning cost increases and the school groundsman will have to spend a long period of time to clean those rubbish. This has reduced the time to spend on the more beneficial school maintenance projects (Green 2005). On the other hand, litter is a safety and health hazard and gives bad image for our communities.
In conclusion, the sale of junk food in school canteens should be banned as junk food can lead to several negative impacts like childhood obesity, bad behaviour and littering problems. Schools should educate students about good nutrition and introduce more healthy food policies to promote good eating habits. However, most importantly the eating habits of children at home need to be changed to a healthier way (Tran 2005).
Sunday, April 25, 2010
Sunday, April 18, 2010
Arguementative Essay 1 Draft 1
Should the sale of junk food in school canteens be banned?
Junk food is defined as unhealthy food and food that has low nutritional value. According to Nutritional Value of the Most Popular Snack Foods from Health Foundation (2005), junk foods like chips, hamburgers, instant noodles and soft drinks are all having low nutritional value. As junk food contains chemical additives, it is tastier and has longer shelf life. Its cheap manufacture cost and easy storage have also increased its popularity. (Smith 2005) I strongly believe that the sale of junk food in school canteens should be banned as junk food can lead to childhood obesity, bad behaviour and littering problems.
Firstly, junk food is to be blamed for the rising of childhood obesity. It has been shown that the foods eaten at home by 12-14 years old Australian children in 2003 have an increasing trend on fat and sugar intake instead of fresh fruit and vegetables. (Australian Nutrition Journal 2004) This problem is made worse when the school canteens are offering junk food to the students, making junk food to be widely available. Junk food is high in fat and sugar and it can promote youth weight gain due to the rising of kilojoule intake. Childhood obesity can be further lead to heart disease, osteoarthritis and some cancers. (Tran 2005)
Besides, junk food causes behavioural problems in children according to Smith (2005). This has been further elaborated by Cray (2005) that students who consume more junk food cannot get sufficient nutrients for their health development and growth. Thus, their learning potential is reduced. Students often take junk food as their lunch in school. Certain chemical additives in junk food can cause students to be hyperactive and have poor concentration. There is a noticeable improvement in students’ behaviour in class and they are becoming calmer after lunch when junk food and soft drinks are removed from the school canteen. (Green 2005)
Furthermore, the sale of junk food in school canteens can also lead to litter problems. Fast food often comes with plastic packaging and students will just dispose the packaging anywhere after eating the food. There are also empty soft drink cans everywhere. The cleaning cost increases and the school groundsman will have to spend a long period of time to clean those rubbish. This has reduced the time to spend on the more beneficial school maintenance projects. (Green 2005) On the other hand, litter is a safety and health hazard and gives bad image for our communities.
In conclusion, the sale of junk food in school canteens should be banned as junk food can lead to several negative impacts like childhood obesity, bad behaviour and litter problems. Schools should educate students about good nutrition and introduce more healthy food policies to promote good eating habits. Moreover, most importantly the eating habits of children at home need to be changed to a healthier way. (Tran 2005)
Junk food is defined as unhealthy food and food that has low nutritional value. According to Nutritional Value of the Most Popular Snack Foods from Health Foundation (2005), junk foods like chips, hamburgers, instant noodles and soft drinks are all having low nutritional value. As junk food contains chemical additives, it is tastier and has longer shelf life. Its cheap manufacture cost and easy storage have also increased its popularity. (Smith 2005) I strongly believe that the sale of junk food in school canteens should be banned as junk food can lead to childhood obesity, bad behaviour and littering problems.
Firstly, junk food is to be blamed for the rising of childhood obesity. It has been shown that the foods eaten at home by 12-14 years old Australian children in 2003 have an increasing trend on fat and sugar intake instead of fresh fruit and vegetables. (Australian Nutrition Journal 2004) This problem is made worse when the school canteens are offering junk food to the students, making junk food to be widely available. Junk food is high in fat and sugar and it can promote youth weight gain due to the rising of kilojoule intake. Childhood obesity can be further lead to heart disease, osteoarthritis and some cancers. (Tran 2005)
Besides, junk food causes behavioural problems in children according to Smith (2005). This has been further elaborated by Cray (2005) that students who consume more junk food cannot get sufficient nutrients for their health development and growth. Thus, their learning potential is reduced. Students often take junk food as their lunch in school. Certain chemical additives in junk food can cause students to be hyperactive and have poor concentration. There is a noticeable improvement in students’ behaviour in class and they are becoming calmer after lunch when junk food and soft drinks are removed from the school canteen. (Green 2005)
Furthermore, the sale of junk food in school canteens can also lead to litter problems. Fast food often comes with plastic packaging and students will just dispose the packaging anywhere after eating the food. There are also empty soft drink cans everywhere. The cleaning cost increases and the school groundsman will have to spend a long period of time to clean those rubbish. This has reduced the time to spend on the more beneficial school maintenance projects. (Green 2005) On the other hand, litter is a safety and health hazard and gives bad image for our communities.
In conclusion, the sale of junk food in school canteens should be banned as junk food can lead to several negative impacts like childhood obesity, bad behaviour and litter problems. Schools should educate students about good nutrition and introduce more healthy food policies to promote good eating habits. Moreover, most importantly the eating habits of children at home need to be changed to a healthier way. (Tran 2005)
Thursday, April 15, 2010
Final version of Text Production Essay
What are the potential effects of global warming in terms of climate change and how can they be arrested?
Global warming is no longer a future fear, instead it is happening now. (Riebeek 2007) With some countries like China and India which are developing at an increasing speed, there is a big boost in the number of factories and vehicles. Billions of tons of greenhouse gases, namely carbon dioxide, are emitted into the atmosphere, causing the thermal radiation to be trapped in the earth. Thus, the earth has warmed and climate change occurs. Unequivocally, there will be potential effects of global warming in terms of climate change like rising of sea levels, frequent happening of natural disasters and disorder of the balanced ecosystems but people can cut down the carbon dioxide emissions to arrest those problems.
One of the effects of global warming is the sea-level rise. It happens when the oceans get warmed up and the water expands. The melting of mountain glaciers and ice sheets has also contributed to the rise. According to Riebeek (2007), the rising sea levels will erode coasts and cause more frequent coastal flooding. This is a great threat for people who live in coastal areas less than 10 meters above sea level, for instance in Florida, California or Bangladesh. Although the sea levels are only rising 3cm per decade, it is massive enough to let the houses disappear underwater.
Another effect of global warming is that natural disasters will happen more frequently. Examples of those disasters included destructive storms, flash floods, widespread droughts, hurricanes and tornadoes. When the ocean gets warmer, it causes stronger storms. As the water temperature increases, the wind velocity increases and the moisture content increases. (An Inconvenient Truth 2007) Thus, Hurricanes Katrina formed in Florida at 2005. The consequences are pernicious. People are losing their properties, family and friends. Besides, heat wave also happened in Europe at 2003 which caused an estimated death of 35,000 people. In short, scientists expect that the erratic weather patterns will lead to more sufferings of people in earth.
Furthermore, global warming also affects our balanced ecosystems. Plants and animals grow well in the balanced four seasons. However, global warming leads to the earlier coming of spring and later of fall. Animals need to migrate earlier and plants need more water to withstand the longer growing season. If the temperature keeps on getting higher, the animals and plants which cannot adapt will face extinction. On the other hand, global warming also melts the ice sheets. The polar bears, which depend on the ice, will soon face extinction too. In short, global warming is putting pressure on ecosystems. (Riebeek 2007)
In order to reduce global warming, people should lessen the emissions of carbon dioxide. There are many ways that an individual can do. For example, buy energy efficient appliances and lamps that reduce energy for heating. It is also better to walk, use bicycle, public bus or hybrid car to travel from one place to another. (Woodford 2006) People should also switch to renewable sources of energy instead of fossil fuels which would emit large amount of carbon dioxide. Besides, use less electronic appliances to save energy. Open the window instead of turning on the air-conditional. In other words, every individual can help to cut down carbon dioxide emissions by small practices.
In conclusion, global warming in terms of climate change has devastating potential effects and they must be arrested. It will lead to sea-level rise, frequent happening of natural disaster and disorder of the balanced ecosystems. Reducing the carbon emissions will help to solve the problems. In fact global warming has been happening many years ago and most importantly it is irreversible. It is a good thing that we have the awareness of reducing global warming. However, in the meantime, we should adapt the climate change that happens. (Carter 2008)
Global warming is no longer a future fear, instead it is happening now. (Riebeek 2007) With some countries like China and India which are developing at an increasing speed, there is a big boost in the number of factories and vehicles. Billions of tons of greenhouse gases, namely carbon dioxide, are emitted into the atmosphere, causing the thermal radiation to be trapped in the earth. Thus, the earth has warmed and climate change occurs. Unequivocally, there will be potential effects of global warming in terms of climate change like rising of sea levels, frequent happening of natural disasters and disorder of the balanced ecosystems but people can cut down the carbon dioxide emissions to arrest those problems.
One of the effects of global warming is the sea-level rise. It happens when the oceans get warmed up and the water expands. The melting of mountain glaciers and ice sheets has also contributed to the rise. According to Riebeek (2007), the rising sea levels will erode coasts and cause more frequent coastal flooding. This is a great threat for people who live in coastal areas less than 10 meters above sea level, for instance in Florida, California or Bangladesh. Although the sea levels are only rising 3cm per decade, it is massive enough to let the houses disappear underwater.
Another effect of global warming is that natural disasters will happen more frequently. Examples of those disasters included destructive storms, flash floods, widespread droughts, hurricanes and tornadoes. When the ocean gets warmer, it causes stronger storms. As the water temperature increases, the wind velocity increases and the moisture content increases. (An Inconvenient Truth 2007) Thus, Hurricanes Katrina formed in Florida at 2005. The consequences are pernicious. People are losing their properties, family and friends. Besides, heat wave also happened in Europe at 2003 which caused an estimated death of 35,000 people. In short, scientists expect that the erratic weather patterns will lead to more sufferings of people in earth.
Furthermore, global warming also affects our balanced ecosystems. Plants and animals grow well in the balanced four seasons. However, global warming leads to the earlier coming of spring and later of fall. Animals need to migrate earlier and plants need more water to withstand the longer growing season. If the temperature keeps on getting higher, the animals and plants which cannot adapt will face extinction. On the other hand, global warming also melts the ice sheets. The polar bears, which depend on the ice, will soon face extinction too. In short, global warming is putting pressure on ecosystems. (Riebeek 2007)
In order to reduce global warming, people should lessen the emissions of carbon dioxide. There are many ways that an individual can do. For example, buy energy efficient appliances and lamps that reduce energy for heating. It is also better to walk, use bicycle, public bus or hybrid car to travel from one place to another. (Woodford 2006) People should also switch to renewable sources of energy instead of fossil fuels which would emit large amount of carbon dioxide. Besides, use less electronic appliances to save energy. Open the window instead of turning on the air-conditional. In other words, every individual can help to cut down carbon dioxide emissions by small practices.
In conclusion, global warming in terms of climate change has devastating potential effects and they must be arrested. It will lead to sea-level rise, frequent happening of natural disaster and disorder of the balanced ecosystems. Reducing the carbon emissions will help to solve the problems. In fact global warming has been happening many years ago and most importantly it is irreversible. It is a good thing that we have the awareness of reducing global warming. However, in the meantime, we should adapt the climate change that happens. (Carter 2008)
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