Preserving environment is what we ought to be concerned about. Since we use it daily, we should preserve it so that the environment will last perpetually. In ancient times, the environment was bountiful. There was no air pollution. In addition, natural environment was enough for all people on the grounds of the fact that there were not many populations. They gave an importance of preserving the environment. Hence, the surroundings were nice, and residences were livable. Nonetheless, nowadays, the environment has been changed. There is an enormous amount of air pollution. Trees are cut down. The people do not see the importance of them. There are now plenty of high concrete buildings replacing large trees. As people resources are selfish, need comfort and do not see the importance of preserving the environment, there is lack of resources, such as forest resources and mineral resources. Yet, if everyone gives an importance of preserving the environment and use it properly, the surroundings will surely be nice. There will be no air pollution. Moreover, it will constitute a positive effect upon not only physical health but also mental health. Preserving the environment brings a number of benefits for you as well as others.
Therefore, we should considerably realize the importance of preserving the environment. It is the duty of you as well as others. If we cooperate to preserve the environment, our life will be better and better. On the contrary, unless we preserve the environment, who else will do it?
แก้ไขข้อความเมื่อ 14 กันยายน 2556 เวลา 21:00 น.
Smog hanging over cities is the most familiar and obvious form of air pollution. But there are different kinds of pollution—some visible, some invisible—that contribute to global warming. Generally any substance that people introduce into the atmosphere that has damaging effects on living things and the environment is considered air pollution.
Carbon dioxide, a greenhouse gas, is the main pollutant that is warming Earth. Though living things emit carbon dioxide when they breathe, carbon dioxide is widely considered to be a pollutant when associated with cars, planes, power plants, and other human activities that involve the burning of fossil fuels such as gasoline and natural gas. In the past 150 years, such activities have pumped enough carbon dioxide into the atmosphere to raise its levels higher than they have been for hundreds of thousands of years.
Other greenhouse gases include methane—which comes from such sources as swamps and gas emitted by livestock—and chlorofluorocarbons (CFCs), which were used in refrigerants and aerosol propellants until they were banned because of their deteriorating effect on Earth's ozone layer.
Another pollutant associated with climate change is sulfur dioxide, a component of smog. Sulfur dioxide and closely related chemicals are known primarily as a cause of acid rain. But they also reflect light when released in the atmosphere, which keeps sunlight out and causes Earth to cool. Volcanic eruptions can spew massive amounts of sulfur dioxide into the atmosphere, sometimes causing cooling that lasts for years. In fact, volcanoes used to be the main source of atmospheric sulfur dioxide; today people are.
Industrialized countries have worked to reduce levels of sulfur dioxide, smog, and smoke in order to improve people's health. But a result, not predicted until recently, is that the lower sulfur dioxide levels may actually make global warming worse. Just as sulfur dioxide from volcanoes can cool the planet by blocking sunlight, cutting the amount of the compound in the atmosphere lets more sunlight through, warming the Earth. This effect is exaggerated when elevated levels of other greenhouse gases in the atmosphere trap the additional heat.
Most people agree that to curb global warming, a variety of measures need to be taken. On a personal level, driving and flying less, recycling, and conservation reduces a person’s "carbon footprint"—the amount of carbon dioxide a person is responsible for putting into the atmosphere.
On a larger scale, governments are taking measures to limit emissions of carbon dioxide and other greenhouse gases. One way is through the Kyoto Protocol, an agreement between countries that they will cut back on carbon dioxide emissions. Another method is to put taxes on carbon emissions or higher taxes on gasoline, so that people and companies will have greater incentives to conserve energy and pollute less.
Preserving environment is what we ought to be concerned about. Since we use it daily, we should preserve it so that the environment will last perpetually. In ancient times, the environment was bountiful. There was no air pollution. In addition, natural environment was enough for all people on the grounds of the fact that there were not many populations. They gave an importance of preserving the environment. Hence, the surroundings were nice, and residences were livable. Nonetheless, nowadays, the environment has been changed. There is an enormous amount of air pollution. Trees are cut down. The people do not see the importance of them. There are now plenty of high concrete buildings replacing large trees. As people resources are selfish, need comfort and do not see the importance of preserving the environment, there is lack of resources, such as forest resources and mineral resources. Yet, if everyone gives an importance of preserving the environment and use it properly, the surroundings will surely be nice. There will be no air pollution. Moreover, it will constitute a positive effect upon not only physical health but also mental health. Preserving the environment brings a number of benefits for you as well as others.Therefore, we should considerably realize the importance of preserving the environment. It is the duty of you as well as others. If we cooperate to preserve the environment, our life will be better and better. On the contrary, unless we preserve the environment, who else will do it?แก้ไขข้อความเมื่อ 14 กันยายน 2556 เวลา 21:00 น.Smog hanging over cities is the most familiar and obvious form of air pollution. But there are different kinds of pollution—some visible, some invisible—that contribute to global warming. Generally any substance that people introduce into the atmosphere that has damaging effects on living things and the environment is considered air pollution.Carbon dioxide, a greenhouse gas, is the main pollutant that is warming Earth. Though living things emit carbon dioxide when they breathe, carbon dioxide is widely considered to be a pollutant when associated with cars, planes, power plants, and other human activities that involve the burning of fossil fuels such as gasoline and natural gas. In the past 150 years, such activities have pumped enough carbon dioxide into the atmosphere to raise its levels higher than they have been for hundreds of thousands of years.Other greenhouse gases include methane—which comes from such sources as swamps and gas emitted by livestock—and chlorofluorocarbons (CFCs), which were used in refrigerants and aerosol propellants until they were banned because of their deteriorating effect on Earth's ozone layer.Another pollutant associated with climate change is sulfur dioxide, a component of smog. Sulfur dioxide and closely related chemicals are known primarily as a cause of acid rain. But they also reflect light when released in the atmosphere, which keeps sunlight out and causes Earth to cool. Volcanic eruptions can spew massive amounts of sulfur dioxide into the atmosphere, sometimes causing cooling that lasts for years. In fact, volcanoes used to be the main source of atmospheric sulfur dioxide; today people are.Industrialized countries have worked to reduce levels of sulfur dioxide, smog, and smoke in order to improve people's health. But a result, not predicted until recently, is that the lower sulfur dioxide levels may actually make global warming worse. Just as sulfur dioxide from volcanoes can cool the planet by blocking sunlight, cutting the amount of the compound in the atmosphere lets more sunlight through, warming the Earth. This effect is exaggerated when elevated levels of other greenhouse gases in the atmosphere trap the additional heat.Most people agree that to curb global warming, a variety of measures need to be taken. On a personal level, driving and flying less, recycling, and conservation reduces a person’s "carbon footprint"—the amount of carbon dioxide a person is responsible for putting into the atmosphere.On a larger scale, governments are taking measures to limit emissions of carbon dioxide and other greenhouse gases. One way is through the Kyoto Protocol, an agreement between countries that they will cut back on carbon dioxide emissions. Another method is to put taxes on carbon emissions or higher taxes on gasoline, so that people and companies will have greater incentives to conserve energy and pollute less.
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