What should we do to protect the environment?
Enviroment is the most important thing for our life. Enviroment is the air we breath, the water we drink and is everything we need for our life. But now that most important thing for our life is being polluted and by many different ways. This pollution affects the health of living things. Air is damaged by car and lorry fumes, and power stations create acid rain which destroys entire forests and lakes. When fossil fuels i.e. oil, gas and coal are burned to provide energy for lighting, cooking etc. they form polluting gases. Not only on land but also in the sea, oils spills pollute sea water and kill marine life; chemical waste from factories and sewage works, and artificial fertilisers from farmland, pollute river water, killing wildlife and spreading disease. Everything is being caused by human’s existence. Humans create such a lot of rubbish! Each household produces about 1 tonne of rubbish every year! Most of this is taken away by dustmen and buried in enormous landfill sites or burned in incinerators - both of these actions can be dangerous for the environment.
But only we can change it and solve it. Pollution can be prevented by thing we do everyday. First we can use recycled paper to help save trees. Second try to avoid buying plastic. It's hard to recycle. One way to cut down on plastic is to refuse to use carrier bags. If we can’t avoid buying plastic bags, we should use re-use plastic bags over and over again, until they wear out. Finally we should take your old clothes to charity shops, some are sold. To protect environment we also have to save energy. Use less energy by switching off lights when rooms are not in use, not wasting water; don’t forget to switch off all electric things when they are not in use, use a bicycle or walk instead of using a car for short trips we can save energy, keep clean atmosphere and keep healthy life. Lighting accounts for 10 percent to 15 percent of the electricity bill. However, this amount can be reduced by replacing an ordinary 100-watt light bulb with an energy-saving bulb and we still trying to invent the new thing to save money as well as conserve the Earth’s resources.
Keep clean environment isn’t only all ways are mentioned before but also to protect natural resources. That is the way to conserver wild life. First we need to conserve the old forest, rainforest, build more safari and national park, and plant more trees to make place to live for wild animals. Second we need to prohibit hunters who hunt animals too many out of the law allowance.
Finally, we now know that enviroment is the most important thing for life and we know how to protect and use it scientifically. Everyday we invent and find more and more way to protect enviroment. I hope that in the future the earth will be cleaner
The advantages of online-study?
Nowadays, online learning has become more and more popular. Although we all know that it is replacing traditional classroom instruction step by step in some developed countries, I totally disagree with the statement “Online learning is not only convenient for students and teachers but often more effective than traditional classroom instruction”. The reasons why I say so as follow. The first reason is students can easily be lazy when taking an online course if they are not self-conscious. It’s because online learning doesn’t require a fixed timetable which is compulsory in traditional classroom instruction. Students can study whenever they want. This may be an advantage or a disadvantage because they have to develop their own schedule and stick to it; push themselves to log on the system every day and study self-consciously. If students lack of these abilities, they will easily neglect their studies and be lazy to study. The second one is students can be easily distracted by many things when learning online. Most students tend to open common social websites such as Facebook, twitter, YouTube, etc. to update themselves on information as well as sign in yahoo messenger to chat with friends when they are online. Once they are sunk in the information that they get from these websites, it will be very hard for them to concentrate on their studies and they will waste a lot of time on doing nothing related to the lessons. The last one is online learning requires a computer and easy access to the Internet connection. However, some families share a computer and it is difficult to give students enough time to finish their coursework on that computer. Moreover, their studies can be interrupted by the disconnected networks. This will make them feel discouraged and they may turn off the computer before completing their lessons. In conclusion, I don’t think that online learning is more effective than traditional classroom instruction. Although it may be convenient for some people, it can’t totally replace traditional teaching in classrooms. When students go to school and study in class, they will focus more on the lessons and they can argue with their teachers about problems that they don’t understand clearly through direct communication. Therefore, it is better for them to attend the class than to take an online course.
nguồn : internet
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